Body and paint SOS-911 help

New question for yall. I have my fenders and hood down to metal. I used both sanding and chemical processing.
After the stripping I washed down the parts with soda water and then pressure washed the parts especially the cracks where the stripper may have gotten. I have been working on sanding down the little sandy pecker tracks which is a pain and am getting ready to spray some primer.
Question is do I need to use a self etching primer on the bare metal or will epoxy primer be sufficient? Should I use a sealer? Any thoughts or warnings?
I appreciate all the help.
John