Well, I've started. I went with the flat white clean metal primer. It was cheaper. Here are some progress pics. Primer was applied straight from the can, body prepped with 220 on random orbital sander.

All stripped down











One of the bed rail that I have to fix a couple of small holes. I think Im just going to straighten the metal as much as possible, then do some expoxy to fill in, topped off with some filler to make it nice and smooth. Or just go straight to bondo/filler if its already close enough.