I didn't remove mine to do all that work. I just cleaned them good with brake cleaner (could have done a better job too) and painted them red with the G2 paint brush... 2 coats. No clear coat over the decal either, which still looks great after a year.
Behind wheels and with the Porsche stickers on them from an eBay seller, it's hard to tell that I brushed them on and they look fine to me. The paint smoothes out nicely.
I think if I were going to do the amount of work you did based on the desire to make them the best they could be, I'd pay to have them powder coated. Calipers get beat up due to the heat and debris bouncing off them at speed, and that much work is admirable, but seems like it would have diminishing returns.
We should both return to this thread in a couple of years and describe how our calipers are holding up to compare notes to see if the long process lasted any longer than the short process
