Need opinion

Hey guys:

The machine shop is about done with my heads and I'm second guessing my self on the amount of shaving I had them do. I originally had them just do .010 of a cut because I don't want to get into trouble lining up the intake. However I've been doing some reading and it looks like most of you cut them about .030 which I understand will help a little with the compression.

So my questions are will taking this much off cause any problems lining up the intake, and is it worth the extra $75.00 dollars?

The heads are 714 casting that have been opened up to 1.88 intakes and 1.6 exhaust. 3 angle valve job, back cut the valves, everything to make them flow.

Jon