optimus priming

Ok,
I haven't done much painting with cars and thought I would give it a shot and would like to see what people think or if they have any good recommendations.

I have a 1970 duster I have stripped down to nothing, no trim, windows, notta...

While I have it apart this far I want to do what I can to prime and paint it as best as i can. I can do all the finishing work after I have an engine in it I just want to get the car protected from the elements right now.

I was thinking of blasting but have heard it can damage panels, I have an air powered DA sander but work seems slow. How should I prep this car for priming getting in the corners as best as I can?
I have a lot of experience refinishing firearms in which everything needs to be bare metal which is making me want to put lots of prep work in.