The blast scheme is exactly what I did to my frame. I went with the gray stratum(2-component primer) and the pinnacle 460 satin black.
I sprayed both coats the same day. And as I said, swp don't know squat. I feel as true about this as white shark does about home depot.
You get what you pay for, and diamond vogel is geared for your particular application. It is also more durable than most ppg's , centaris(both over priced) . Now Diamond Vogel may not measure up to what you want on the body finish. But wait till ya get to that stage.