Lug,
You have a lot of shop for that. Ground prep and concrete can surprise you on how much it costs up here in the pacific northwest. I'm still planning my next one.
After cab off restoring my 53 in a 20 by 24, I think I know the size of the next one. You can get some good lessons by having too small of a shop. I was constantly taking parts back and forth from my other garage for storage. If you are going to do a cab off truck restoration listen up, you need a lot of room or you will be fighting space problems throughout the build. Need a bay for each lift, my next one will have a 2 post as well as my 4 post. A space for a clean work bench and one for rough dirty work. I found another assembly table accessible from all four sides is real handy for doing large jobs like upholstering seats and rebuilding doors and such. And space you can roll your frame into to get it away from the bodywork you are doing. My ideal garage would not have anything along the side walls, a storage room for the compressor and boxes of parts ,engine stands and so forth is handy too. Probably minimum of about 1200 square feet. Well I can dream.
Steve
1953 Chevrolet 3100261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
In the DITY GalleryVideo of the 261 running1964 GMC 1000305 Big Block V6, sm420, the next cab off restoration