I'm not so sure you have quite the static CR you mentioned based soley on what KB claims...trying to compute mechanical CR by just using the measured compression pressure is about like trying to predict weather without a barometer, as the cam timing and induction play a determinate role in that pressure. If you want the real numbers, you gotta know how far the pistons are in the hole, gasket thickness and diameter, true volume of the heads, etc...
That being said, I ran some numbers assuming a blueprint deck height, with KB 237 pistons (0.026" in the hole), 88cc heads, .040"x4.4" gasket, 6cc valve reliefs, and some other generic numbers and only came up with 9.3:1.
...not that you need a ton of compression to make a stout 440.