A little more progress to report.
So I priced out insulating the attic to about R50 (20in of insulation) I also priced out just having the outside blown and on the middle 8ft doing R14 batts, then some 5/8 plywood and 2x4' then (for walking) then R38 batts on the plywood. which would make future alterations and repairs easy. However to my suprise it was going to cost a lot of extra money just to make and theoretical future alterations up there easier. At this point I don't think I want to spend that much money on making things hypotetically easier in the future so i'm just going to do R50 blown insulation like 90% of other new builds proabbly do.
As a result of that change my wires in the attic would no longer be in a ' protected service cavity' so I re-strung all my 12/2 wires up in the attic so they are all electrical stapled on top of 2×4's (rather than across them) as the electrican had recomended. Yes, I could have saved myself a lot of work by pricing things out first, lesson learned!
I'm now in the process of stringing some 10/3 wire for hoist its over kill as the hoist is only 20Amp 250V and only requires 2 hots and a ground but I figured if I ever replace it, having a larger wire in place and also one with a neutral will future proof it in-case a future new hoist require a little more power or has 120v auxillary features.
Here's the 10/3 wire in the attic where it meets up with the 12/2 wires on their way back to the panel from various locations. I tired to keep it all neat as I could.

And the stringing of the three 12/2 wires on there way to the south west side/corner of the shop:

Also after some debate I decided that although i'm using a hand operated chain hoist for the 12ft talls doors to save money, I do want to future proof it, so I added a dedicated 20amp 120V circuit for 'future' power door openers about 3 feet back from the wall centered between the doors. Hopefully that is a workable spot as it would be hard to change now.

I've also started the vapor barrier and 3/8 ceiling plywood (I don't see an advantage to thicker plywood on the ceiling). note the future door opener plug box. Additionally I extened the sofits ducts up to 30in of height above the bottom of the trusses as they are only 20in before (not tall enough) and stuffed 8in x 24in strips of Roxul my neighbors gave me on top of the walls but under the sofit ducts (had to be careful not to crush the ducts!) The Roxul strips will stop any blown insulation from falling into the sofits and should also stop and wind guests from messing up the blown insulation.
I need to get at least the first 8ft of the celing clad with plywood before my doors arrive but I couldn't go further than 4ft until I made a decision about lighting...

Being that I have 18ft ceilings in the tall area I thought my shop is a decent cannidate for High bay lights. I got these two from Rona they produce 15,471 lumens each (about 31,000 combined)
I honestly don't know if that will be enough light but if it is it will turn out to be a very inexpensive lighting solution and also very simple since I can just use the two existing ceiling light electrical boxes. Additionally they hang down from the ceiling with a chain which perfect as my one electrical box is situatied between where the 2 12ft garage doors roll up so the light will still be visible even when the doors are open.
So basically i'm going to put up some plywood then the high bay lights and then judge if its enough light, if not i'll add some more boxes before completing closing up the ceiling.
I also added the blocking to hang the high bay light on my light box near the 12ft doors
