Now i thought it takes a real painter to throw down in a hay barn.The dry/clean air is a must. If you paint stocks or Cerakote, definitely a paint room with exhaust fan, waterproof walls for easy clean-up and plumbed heat/air.
And LED lighting.
Two things I don’t have in my shop that would make a huge improvement. And if you run a rotary phase converter wire it outside the shop so you don’t have to listen to it.