Definitely interested to see how it turned out!

Spray pattern can definitely have some significant effects on the paint quality. For the most part, I recommend that people NOT use spray bombs on their exterior. Spray bombs typically have no hardener in them whatsoever; you may find that paint gets taken off by the elements quite easily. That being said, I have heard that Tremclad holds its own better than most.

I had to paint a few spots on the undercarriage this winter after scraping off the surface rust. I decided to grab some paint through Eastwood that actually has a canister of hardener in the middle of the can. Pop the canister open, and you've got 48 hours of proper 2K paint with hardener. The spray patterns available with those cans were amazing; it's going to be hard to go back to the cheap stuff I get through work!