Paint Experts: Process Advice Needed

I've been cleaning up the inner sides of the deck lid/jam and doors/jams for my '66 Dart to get ready for paint. While cleaning them up and sanding the rough spots, I've sanded through to bare metal in some areas. Since I'm a couple months from actually shooting color on these panels, what's the best approach to protect them now and the process for when I actually get around to getting the finish sprayed?

Should I cover them in epoxy primer now, then when it comes time for finish, I could sand, cover in 2k sealer, followed by the single stage finish? Or is there another DTM product you'd recommend using now? Or perhaps I should spot prime the bare metal spots with self-etch, the scuff, spray w/ 2k sealer and finish when the time comes?

I've never really gotten this deep into paint work before, so I apologize ahead of time for the stupid question.

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