318 piston's and quench

I'd like the 318 to have around 325 horsepower. This is what I thought of using to reach that goal. 500 C.F.M carb, 4-hole 1/2" carb spacer, performer intake, lifter valley baffle, exhaust heat cross over block off plate's, XE256H comp. cam, "302" casting head's with stock size intake valves but 1.600" exhaust with 3 angle valve job and back cutting the valves. Only milling head's enough to provide true flat surface. Machine deck surface for proper deck height, bore/hone block with torque plate's. Speed-Pro piston's with a 1.755" C.H. ( piston's in bore about 0.067" ). With a head gasket at 0.039 thickness C.R. should be close to 9.0:1 with 62cc head's. I've been told the mopar swirl port head's vary from 55-67cc so I really can't calculate the C.R. till I get the head's and check them. A comp tech told me I need a min. of 8.5:1 for the cam I'm looking at. Don't want to port the head's as this hurt's low end torque and according to my machine shop so would going to the 1.88" intake valve. Cam pull's from 1,000 R.P.M. to 5,200. I'm thinking for the street may never see over 3,800 R.P.M. Would the piston's be too far down the bore to make 325 horsepower? I'd like for it to have awesome torque as well. Any suggestion's ideas I'm open to.