Jeremiah...what I've been doing w/ mine is running it on straight C12 when I spray it. I do trailer my car to the track, so I drain the pump 93 out and refill w/ C12 at home. My motor is around 11:1 and I'm spraying about 250 on it.
I didn't want the hassle of 2 fuel systems...I did that several years ago w/ this car and it worked ok, I just wanted to keep it simple this time. One big pump and a bunch of regulators, lol.