Jim, Stick with a single stage paint,they're easy enough. Mix per the instructions with the correct temp reducer and spray.
I find the easiest temp to spray is around 75, it's not cool and not to warm,using med temp reducer.
I've sprayed at all different temps but the ball game gets a little harder at the extremes in the temp ranges unless you have a lot of experience.
One more thing I would do is get a fender, a door, something to practice on to test out your ability to paint,unless you feel you are a born painter.
I say that cause I've seen guys grab a rattle can and not be able to spray a small tool box and get it looking good.
Good luck
Dan