Disc Brake resto questions.

[goinforbroke]

Rebuilding the front subframe on my 72 Nova. Had the frame blasted, epoxy primed it and painted it. Installed all new bushungs, springs, shocks. Now it's time for the brakes. The car has original grooved brake rotors which can probably not be replaced. Should I use them anyway, or is there a good replacement or aftermanrket rotor out there? Ditto for backing plates, mine are ok but, were painted black. Should I buy some zinc or silver paint, or do I buy a repop set? Recommendation on good caliper paint? I did have the caliper brackets replated in yellow cad. Thank You for your info. I really do appreciate it.