Well, I got really motivated and put in another 5 hours after work. My wife hates me and my Mustang right now. I was able to complete final prep and paint the bay. I got really concerned when I went to do my final wipe down with acetone. Started guming up the existing finish I just finished sanding and feathering and sanding and feathering..... I stopped and re-sanded with 220 and then washed and rinsed with soap and water. All seemed good.
Went to spray the Krylon and all went very well from there. I used the semi-flat RTA9203 and couldn't recommend this stuff enough. Nice nozzle and spray pattern. Easy to use and nearly impossible to create a run and dries fast for recoating. Put 3 coats on and it looks better than new - almost 3 cans of paint. No more ugly factory runs or undercoating. No sanding marks either and I'm very happy with it. It was dark when I finished, so I'll have to take some pics and post later.