I shot another two coats of epoxy primer on the new floor and another coat on the complete tub after scuffing the complete tub with a rough Scotch-Brite pad.

With the epoxy primer I can now shoot paint directly to the primer (with a sealer) but with a self etching primer I would have to shoot a primer over the self etching then a sealer before top coat.

I'm going to shoot a top coat and then shoot the whole tub with a bed liner type finish (not sure which one yet because there are a lot of them out there).