I see a mismatch here. In your opening statement, you say you want to turn the motor 6,000-6,500 rpm's. The cam you plan to use will make power from about 4,700-8,000 rpm's with minimum 12.25:1 static compression ratio.

Your 0.060" over block with 50 cc pistons, 119 cc heads and 9 cc gaskets with zero deck will make 12.65:1 static c.r.