Check my work-Chime in please

With the closed chamber heads, and the really,really tight quench (you better check that closely), I think it will be fine. The .039 gaskets would add about 2.6cc, making the total chamber volume 68.238, and the Scr of 9.386, and the Dcr to 8.25.
Or you could keep the .028s and close the intake a lil later;51* would change the Dcr to 8.39, 53* would be 8.31.

But you have got to check the piston to head clearance!