Those look OK, but approaching marginal. I see about a 13psi difference between low and high, almost 10%, which is the diff limit, 8% if you're conservative - didn't do the math but think you're over that one. The next test options are a cylinder leakage test and a text for exhaust products in the coolant. I'd do an oil test, too.

From an engineering economy standpoint, I'd say you don't need the $ for a rebuild right now, but I'd start saving.

Not responsible for advice not taken...