Make sure all blemishes are puttied and sanded out. Tape up all internal parts so paint won't get in there; especially in the wheel pot brackets.
Using an automobile primer, lightly cover all surfaces. When dry, lightly sand with very fine sandpaper.
For finishing, I use Rust-Oleum Textured exterior furniture paint. Keeping the spray a good 12-18" from the surface, you can get a nice textured finish. This is the same paint I use on the leftyHOTAS handles.