Explosion proof fans and lights are pretty much required by law when building a paint booth/ mixing room. Mainly for fumes/sparks. If you've never seen a paint room type fire before, I personnaly hope you never do. I've never seen anything go up so fast.
While the DIY guy can get by with these types of set-ups, I hope you have some nice neighbors. If the Fire Marshall is called, get ready to take it all down ASAP, as this type of set-up at home, in your personal space, whatever, is sooooo illegal in I would geuss all 50 states.
I don't mean to be a downer, but at the same time, I wouldn't want to hear of someone having a nasty fire destroy everything they've busted there hump on either.
Either way, if it works, go for it, and good luck.
By now I'm sure you probably figured out that I have the luxury of a Quality, Professional Facility at my disposal.