Chris,
It sounds like you have a viable game plan, but for diversity's sake I'll tell you how I handled it on my Snipe build. If I am reading the thread correctly, I went the opposite way: I first painted the edge color, masked it off using 1 mm tape, and then proceeded to spray the main CDL color. The thin tape was reasonably easy to conform to the curves, and I sealed off the outer edge with a coat of masking liquid.
I had one or two touch ups to deal with due to my not getting the tape fully set, but nothing too tricky.
Chris