You sure about your CR I just typed in your spec's with the KB CR calculator
Zero deck
0.051" gasket
62cc cambers
I guessed at
0.040" overbore
4.07 gasket dia
5cc valve notches
And I got 9.55:1 static CR
As above, you'll never get 10.7 static with a zero-decked flat top, without serious milling or a steel shim (and mashed valves).
You fluffed your original calculations by putting the valve reliefs in as a negative number (if using the kb calculator).
Run a .040" gasket, it will come in around 9.7-9.8 static and your motor will run happily on 93 or less. Those closed chambers with decent quench won't need much total advance anyway.