I'm about to paint my panel too. I'm just using regular old industrial enamel. I'm going to start at the top, and work down for the primer. For colour, I'm doing two-tone, so that gives me a break when I start doing that. I'm so cheap, all I can think about, is how much all that masking tape costs!
As for that quick drying new fangled stuff, I don't know how you could move fast enough to paint a panel truck in one go.
Why not ask at the place you bought the paint? They usually know all this kind of stuff.
I'm sure someone who knows more than me will chime in with a better answer.
