poor southerner
You are a person after my own heart! I also use Trimite two-pack epoxy (I have to confess that I start with the two-part etch prime first, but this might be considerd over-kill).
To answer TDD's question: ordinary zinc chromate primer is a single-part coating, and will be removed by both Superseam and Poly-Tack, giving you an unprotected surface.
But over-coat it with any two-pack primer (such as Trimite) then the glue will not present bare metal to the atmosphere.
PM me for a fuller reply, with photos and full description.
DT