Agreed 100% about your method with the Black Fire Wet Diamond. It's a waste of time doing it their way, IMO as well.
I usually do the roof, the hood, the rear deck, and a fender. Then I'd remove the first panel I did, do another panel, remove the second panel, do another panel, etc. Or sometimes I'd just do the entire car, then remove it in the order I applied it, then bounce back around some to get off any excess as it's easier to remove as it cures more once the top is removed.
Glad you like it. I guess I'm going to have to try some of the Polish now since you like it so much.