info on compressors from a professional paint site. I run a single stage 220V 5HP 80 gal. tank setup with a Sharpe 3 stage separator - not cheap but works well. You can certainly do it differently & much cheaper - start reading & you'll figure it out. Your biggest problems will running low on air volume & creating moisture in the lines thus spraying it into your paint - bad thing to happen.

do a lot of reading before you invest anything. Good luck.

http://www.spiuserforum.com/search.php?searchid=114766

PS - whatever you do - use proper ventilation & a respirator at a minimum rated for Isocyanates. Not one of those cheezy dust masks, that is truly a fools errand & you see people doing it.