We made 610 on 10psi with pump gas, you need to tune it on your own. That's why we went carb, i didn't trust anyone to tune "my money". You will hurt things with that low of timing...fact. You will make more power with more timing...fact. Did i see somewhere that your AF was 11.8 at WOT?? If it is, that's too close for pump. Another thing to think about is that not all 93 octane gas is the same. One bad/low octane fill up that you don't know about and your done.

I'd set the boost to 13-14psi, put 19* of timing in it (under boost) and get the AF around 10.5-10.8. Then slowly up the boost and timing. Hell alot of what we did, we never had a intercooler of any kind, so you should have more room to play with.

john