Wanting to build a garage (Need advice)

Heres the Cudacave while under construction last year. 10' sidewalls are not tall enough to have a full size lift, better go 12', or 10' studs with a couple courses of block. The Cudacave is 28x36 and is stick built with a 9/12 pitch and 2x12 rafters for future insulation. Also has a second floor with stairs inside the garage. The headroom upstairs is awesome and considered a bonus room. In my opinion, I would stick build the roof as attic trusses don't provide near enough storage, and you would need a pull down stairway to access it. 2' centers are also not as strong as 16", and I would never use plywood on the roof. I have torn off way too many plywood roofs because of plywood delamination than I would like to count. Unless you use 5/8" or better on the roof, the cheap 3,4 , or 5 ply plywood is all junk. OSB is a superior product and will lay flat much better than plywood ever will. Plus, try hauling 5/8" plywood up the ladder to do your roof. You'll surely notice the difference in weight!!! IMO, 26x36 is already too small!!!LOL!!! Build it BIGGER!!! Geof