Recommendations on new shop

This is really smart- getting some ideas before building. Air compressor- I prefer it being outside due to the noise, but will need a small enclosure without blocking air flow. Lots of LED lighting. For me- one good hoist would be adequate and would locate in the middle bay allowing more room to work at the hoist if the two side cars are backed out. It would be nice if the door on that middle bay was taller allowing me to work on taller vehicles if the need arose. I would keep washing activities outside but since you have a restroom with a drain, one bay could have a drain to catch cooling system stuff. After you build this, I'm coming over to work on my car.