This is a race car that is not driven on the street? And is it legal to run 9's? If so I'd go with something nice and simple such as a 4.25 crank with 7.10 rods and flat top pistons. That should give you around 12:1 compression but you'll need to run the numbers. 12:1 compression should be in the sweet spot where you'll make decent power without requiring super expensive fuel or touchy tuning.

Build it to last rather than trying to get every last drop of power out of it so stay conservative with the rings and bearings. Put a good oil pan in it, stay conservative with the timing and stuff like that. If the engine is built right it should last for hundreds of runs and be fun to drive.

With those heads and cam you should easily make 700 hp with a 12:1 short block. Probably closer to 800 hp if you have good headers, good ignition and the carb is dialed in.