I actually have a pair of P90's going in the guitar. I'll keep the mini's in the case in case someone else ends up with it later.
^^
PS: I like the tone of the gold color you chosefor the top, more reminiscent of the mid '50s, rather than '60s and '70s finish to my eye.
It's from Reranch.com. Great lacquer, and true to the original finishes.
What an amazing transformation! Would love to see a photo of how you dealt with the issue on the back of the neck.