rethinking my whole combo.

Thanks guys, My goal is to run low 12 maybe hi 11s. I want a fairly smooth idle, and be able to run ac. Right now i have 3.91 gears and will probably be trading for some 3.25s when the turbo motor gets built. I have a tight 3500 converter, and was thinking about still using it, im just worried it might be too much stall with the turbo.
Do you guys think that the cast pistons will handle 8-10 psi ok? The pistons are down int the hole .085!!!!!!! So not much there to help the deck of the block was allready milled .015 to square everything up I did make a mistake on my math and the engine is right at 8.03 to 1, not much of an improvement.