Thanks for the suggestions, it is a bit of a puzzle!
I was hoping to send each pickup to a separate channel, so I will try David’s suggestion first. The pedals are reverb, drive, Sarno black box, and envelope. I’ll try the reverb and envelope between the preamp and amp, and separate drive pedals for each preamp chanel and see how that goes. Probably put the black box between the preamp and amp as well. I have two slightly different speakers and was thinking of dedicating one to each channel. So, I was hoping to have each pickup going to its own channel with a separate speaker for each channel (power amp has two channels as well), but I’ll have to think about if that is worth it or not. Probably too much of a hassle in the end.
If all that doesn’t work I’ll try Bill’s jumper suggestion, which sounds like a good alternative. Thanks again for your thoughts!