[Tinker]

I'm not a pro and someone else here, that is, will give you a better answer.

Here is what I did.

Removed old paint and used ospho on bare metal for an etcher.
Sprayed a Epoxy sealer. (7 day window for respray)
Did bondo were needed, scuffed with a pad, and another couple coats of Epoxy sealer.
Then 3 coats of single stage.
I didn't do a lot of color sanding after the single stage.

Where you bought the paint should have a sheet on the paint you have and all its specs on when you can sand or respray.

I'm not a fan of doing body work either. Much respect for those that do it well.