Mmmm, I took the easy way out on this one. Don't know if it will work yet or not but it should.
I simply cut the gray wire and ran another one to the misc ignition source in the fusebox with an additional circuit carrier and 30 AMP fuse. Pulled the FPCM fuse and it seems to be working well for now. No hot circuits or anything, no starting problems, and it's 58psi at key on. I turned the fuel pressure all the way up to 90 psi and held it for 2 minutes on a single pump with no issues. Will continue to test.