The cam you are using is very close to the RAIV cam (230/240 vs 232/237, .468" vs .481" lift) and will work well. You didn't post the LCA and I don't remember it offhand, but I'll assume that it is 112 degrees. That should get you around the 360-380hp mark on the dyno. It'll be borderline for running on pump gas depending how it is tuned; most likely you'll need to play amateur chemist and mix up your own blend.
Yes, using the 72cc aluminum heads with that cam would put you close to using straight 93 pump gas depending again on tuning, altitude, etc., and should make about 430-450hp. By using the 87cc heads you'd be sure of running pump gas, still make about 400-410hp and would eventually pay for the heads in lower fuel costs (about 30,000 miles!). Best of everything - except the correct look.
The cam will sound quite nice!
Oh, I didn't ask, what transmission are you going to run? An auto with a higher stall convertor will help ease the detonation woes as well.
