Metric sae wrench eqivilent

Got a new gig working on EC130/135/145 and Bell 407’s, coming from Cessna GA aircraft. I’m building up my metric tools (the normal wrenches, sockets, etc.) to match my standard sets.
What tools have you found to be absolutely necessary/helpful that I could be overlooking?

What’s the deal with prices on these things on eBay and stuff? I have 2 full sets of metric combination wrenches from the early 2000’s “va series” that are stamped made in USA and these things sell for like $70-90 on eBay.
Now I’m just a casual user and have decided after all these years to get a set of tekton combination wrenches because I was never a fan of these craftsman wrenches. IMO they’re too short and I like the smooth finish of other styles better.
My point is, do people actually think these are really nice wrenches or are they just looking st them through rose colored glasses? I bought them back in the day because they were cheap and I was a broke teenager. Even though they are made in the USA I don’t think I would ever drop that much money on these wrenches if I saw them on the shelf.

Does anyone know all the Tread tools? I found one post that listed all the links and which model they came in (apparently 20 all up) but they didn't have the tools.
Here is my findings so far:

Link	Models	1st Side	2nd Side	Centre
Clasp, non-adjustable %	Tread, Metric	Bottle opener	Robertson #2	1/4 Socket drive
Clasp, adjustable	Tempo
1 %	Tread, Metric, Tempo	3/32 Flat	1/8 Flat	* 1/2 width link
2	Tread	#1/#2 Philips	3/16 Flat	1/4 Box
3
4 %	Tread, Metric	Pin	Cutter	Scribe
5
6 %	Tread, Tempo	5/16 Flat	1/4 Flat	3/8 Box
7 %	Tread	3/32 Allen	1/8 Allen	3/16 Box
8	Tread	1/4 Allen	3/16 Allen	Oxygen wrench
9 %	Tread, Metric, Tempo	5mm Allen	6mm Allen	10mm Box
10 %	Tread, Metric, Tempo	3mm Allen	4mm Allen	8mm Box
11
12 %	Tread	#1 Philips	#2 Philips	6mm Box
13
14
15	Metric, Tempo	#2 Philips	3/16 Allen	7mm Box
16	Metric	Robertson 1	Robertson 2	8mm Box?
17	Metric, Tempo	Pozi#1	Pozi#2	11mm Box
18	Metric, Tempo	T20	T25	13mm Box?
19	Metric, Tempo	T30	T27	6mm Box
20	Tempo	Scribe	Cutter	Bottle opener?

Can anyone fill or confirm more? This table is based on Leatherman tread links : , my own example (%) and pictures googled. I have seen pictures of two with the Pin and Cutter separated, but I don't know where they would fit here. According to the model list this accounts for nine links on each. I don't have or know any for the LT, I expect they are all different to this set and not interchangeable.
Messing with my old Tread I noticed it is missing two links, 2 & 8 it seems. No surprise, I picked it up at a pawnshop, and many people report taking two links out to fit. I would like 1/2 link more, it is difficult to get over my hand and quite snug on my wrist. I think Link18 would be great, I would gladly swap out the half-width Link1 with flat blades in return for T20 & T25 (and a T15 please. Why they included bigger Torx and missed T15 I can't understand. I doubt I would have enough leverage for most T30 bolts, while T15 is much more common in electronics and let's face it, who but IT geeks would actually wear a Tread?).

I have been doing a LOT of the installs of main switchgear, large meterpack sets and such for my company, but we've slowly been getting more of the apprentices involved in the process to give them adequate hands on experience while also reducing our time that it takes to make them up.
A lot of our guys are lacking basic tools when it comes to building meterpacks, landing feeders, etc., so I am slowly trying to encourage my company to invest in building a "kit" or two to bring to these installs so that these guys can have the correct tooling necessary to do the job correctly, while also giving them an idea of what they will need for tools by the time they get their licenses.
The kit I came up with consists of a 3/8" drive 24" long extension to assist with horizontal buss torquing in large main disconnects, a 3/8" drive SAE long hex bit set, a 3/8" drive SAE short hex bit set, a drive adapter set (1/2" to 3/8" drive, 3/8" to 1/2" drive, etc.), a universal joint adapter set, a Milwaukee 3/8" drive SAE packout socket set, a 3/8" 144 tooth ratchet for working in TIGHT quarters, a 20-100ft/lb 3/8" drive click-type torque wrench, a 40-200 in/lbs 3/8" drive click-type torque wrench and a 2/0 - 250mcm "clover" / 4-way cable stripper. I suggested purchasing a 3 drawer Milwaukee packout and a sheet of Kaizen foam for each kit so that every tool has its place to ensure that all the tools are accounted for at the end of the day / end of work, that nothing is left in the gear and that all the tools make it back to the shop at the end of the work, as the "kits" would cost roughly $790 each (likely less with discounts we get through suppliers)
I have a lot of these tools, along with much more, but I wanted to get people's opinions of what else these kits could use.
I suggested adding a ratcheting set of cable cutters, but I know that will probably get cut from the suggestions as they company does have several 'well-used' M12 cable cutters already, so they would likely see this as an unnecessary addition.
What is everyone's thoughts?

Got the SAE and Metric sets for a bargain I think!
$54 ea set
https://www.harborfreight.com/professional-metric-combination-wrench-set-14-piece-64709.html
Has anyone had a good or bad experience with these?

I'm thinking of getting this for my son as his truck toolkit (first car) and would like to incorporate space for it within a custom center console in his awesome but fabulously shitty Tacoma.
https://www.harborfreight.com/hand-tools/sockets-ratchets/socket-ratchet-sets/14-in-38-in-12-in-drive-sae-and-metric-hi-vis-socket-set-66-piece-64267.html
Anybody have the dimensions on the case so I can make sure there's room for it?

Decided to change my oil in my 3.8 buick due to the service being way overdue and I had a break from school.
After easily removing the plug draining the oil and screwing the plug back in, I moved to the filter. Had a much harder time accomplishing this, had to remove the tire and ended up just piercing the filter with a screwdriver to gain leverage and turn it. After I replaced the filter, I applied some old oil to the top of filter and installed it.
Filled my car with the recommended sae 5w-30, little less than 4.5 quarts. and drove it.
Drove fine around the block. After I drove it to my girlfriends house around 15 mins away. Drove great.
As I was driving back to my house, noticed the light and immediately pulled over, checked my oil and it seemed a little low (quite hard to gauge because brand new oil) added more. Checked the screw again made sure I tightened the guy and checked the filter aswell. All seemed well.
The issue comes in when I start my car, it always pops up with the oil light and a wrench next to it. Unsure how to remove it or fix it. Is it just telling me now is the time to change my oil and I should reset the light, so it doesn’t pop up? Just worried, and wondering if I did anything wrong.
Another note is later that night I drove it for a good 2 hours to travel back to where I attended school. Didn’t hear any odd noises and it drove wonderful.

Simple home DIYer(assembly, appliance repair, minimal woodwork), maybe occasional mechanic needs. Looking to take advantage of the sale tomorrow and upgrade my old Pittsburgh socket set, as well don’t have any metric wrenches really, just random sae. What would be a good versatile set for each? Able to hit two stores need be.
Also are icon needle nose going to perform any better than old randoms?