For waterbased paints- Wicked has very good lightfastness ratings, and has a very tough base. Sprays pretty well, too. E'Tac also has high lightfastness, but if you use the EFX, you have to be a bit more careful with it until cleared. It's designed to be re-wettable and to be used with scratching and erasing techniques, which is awesome if you use those techniques, but also can be an issue if you're not careful with it (I think the AG additive is supposed to "toughen up" the base).
I'm not a fan of Auto Air, but it can certainly be used (I'm just scarred from using so many of it's terrible early formulas. Too many botched paint jobs will leave a bad taste in your mouth).
There is always the option of water-borne paints, like PPG Envirobase, Matrix Aqualusion, or any of the other numerous paint companies systems.
For solvent paint, I usually stick with House of Kolor, PPG, or Matrix. I used to like Xotic's paints, but apparently they went out of business without letting anyone know. Pretty much any quality solvent-based system can be used, though.
Definitely finish it with a 2k clear coat, or see if a local body shop can clear it for you if you don't have the proper equipment.