I'll second the HVLP sprayer, thats what I used and it went well. Also, I didnt use an air-water separator. Paint went on just fine, no problems.
Oldog, you are correct. In the fine state of Illinois your skoolie can not be painted the color of any shade of yellow, nor can the top lights or the flasher on the swingout stopsign be operational.
95 IH 72 passenger transit school bus w/ DT466 and 545 Allison.
79 IH Scout II/392 (0.030 over) Hamilton Injected/727/D300/Full size axles/36" Swampers/Lockers/OBA/38 gal Custom fuel tank, roll bar, tube doors.