Yes, in your free time I would think about adding a FPCM, reap the benefits of the OS. Your boosted so you will gain all of the benefits of Delta Pressure, not just fuel pressure. Then you really don't have to worry about things like clogging fuel filters, is my FP exactly perfect, whatever. I disconnected my BAP on my stock SS pump as a test and ran my FP down to about 20psi while at 10psi boost and my AFR held rock solid thanks to the IFR table. lol. I know the fuel wasn't atomized at that pressure and it was likely dribbling in like a waterfall but it still ran great, no noticable change in power or AFR and no knock. When your pump runs out of steam, it drops PSI FAST.
Yes the FPCM will run non-stock pumps just fine. I've read about them running dual pumps, single larger pumps, whatever, just fine at least nobody reported failures related to the pump.. but its kinda untested waters since HPT just recently gained access to the FPCM, most people with these year cars allready switched to dual always on pumps with returns similar to what you have. Some have used the dual pump with one pump on FPCM PWM, and second pump with Hobbs switch.
Me personally fixed my "weak" pump and it's common dropping FP when boosted just by flat lining the FP table in the FPCM. For years everyone thought it was a weak pump. Goes to show, dont trust what everybody thinks. They were wrong. It was being told to drop fuel pressure. Yes too bad it as a built in bypass. booo.
Let us know how you end up.