That calculator you used sucks, as do most internet calculators. Whoever put that together would have gotten a big fat F in themodynamics, assuming they ever took it. They forgot to include the efficiency factor.

Here are the correct calculations for your data (assuming 80% efficiency).

The adjustment ratio for 7 PSI of boost is (7+14.7)*0.8/14.7 = 1.18

So if you had 9.5:1 compression then 9.5 * 1.18 = 11.2:1 compression which is possible with pump gas.

The adjustment ratio for 10 PSI of boost is (10+14.7)*0.8/14.7 = 1.34

So if you had 9:1 compression then 9 * 1.34 = 12.1:1 compression which is pusing it for pump gas but will not destroy the motor if done properly.