I did a BVM T-33 last year in Klasscote which is a 2 part epoxy. I did add clear on top but that is not strictly necessary. If you start here on post 813:
http://www.rcgroups.com/forums/showp...&postcount=813 (look at the whole thread but skip to 813) there are lot's of pics of the whole painting / sanding and buffing process.

All spraying done with a cheap gun and a .8mm tip. You can use a larger tip for the primer or just thin it more until it sprays.