I think your quest to tone this beast down is probably correct for a street application on 91-92 octane. I wouldn't go any higher that 10.5 and personally would shoot for 10 to 1. With the TRW flat tops you're going to have to mock things up and then measure your CR cuss you can't say whether the block deck has been altered and if so by how much. At that time, using your shaved heads and a .060" head gasket, clay 1 piston on each bank to determine your final piston to valve head clearance and if you've got at least .060-.080" clearance I'd go with this cam.
http://www.summitracing.com/parts/CCA-21-248-4/
You may even want to consider toning down the converter to a 3000 RPM stall, again for the street.
Terry