Am I ok with this? KB107 in La block

Odd side is possible level, even side possible .008 taper cut, I say install others and see what they are, if that is the worst one you should be safe with .008 out of the hole depending on how much taken off the heads. You just need to cc the cylinder heads and measure your comp ratio, if needed you can get other gaskets. let us know what they are.
Look over the heads most machine shops stamp how much the cut off, at least the shops I have used,