Safety wise you'll want to have escape doors. Preferably one on each of the long sides. Dove out one of them at my old job after the primer line broke.(attached to a 55 gallon drum) You have no idea the volume of paint that gets released. And the way it whips around is a whole other story.
More important is fire suppression. The booths I sprayed in had sprinklers. Heads were 6' on center over the length and width. Had one of those pop at random too.(I lead a charmed life)
OSHA may require you to have flow meters on the ventilation. If so they need to be checked and logged everyday. They are used to indicate filter replacement
Probably want to invest in booth coat and an airless to apply it. Plus the flame retardant floor covering. Makes clean up a snap.
Shoot suits, positive pressure breathing apparatus, nitrile gloves etc... I still use a 3M vortex for fresh air.
I painted in an industrial environment for quite a while.