Make sure you have good filters on the exhaust. I've had to buff my airplane out twice due to careless neighbors (one of whom had a booth).
Oh, and however many lights you have, buy more.
Finally, buy some scrap aluminum sheets and try your spray gear and materials out in your backyard. You can learn a lot without having to go all the way to the airport.
<This advice from a guy who taught himself to paint on his airplane's tail feathers. I learned a lot about sanding and buffing paint defects too.>
2001 RV-6 N46KB