While I am disappointed you aren't spraying it yourself, I do understand. I am in the middle of this right now with my Dart. It is all torn apart and after I get the rust replaced on the lower quarters, I will be stripping and epoxying. I am also using SPI products.
What did you use to strip it with? I have a 6" DA and 80 grit paper, but I am worried about getting too close to the body lines. Maybe I just need to tape those off and do those by hand.