What would the static compression be with Harley P/N 22144-08 forged 10.5:1 piston, .030 head gasket, R&R stage IV 85-86 cc heads?

Same but with Cast P/N 21966-07 I think they are 10:1 cast pistons?

Will these pistons be a good choice for the R&R heads?

I don't know if I want low or high compression at this point in time.
Trying to decide which way to go on the cam choices.

 

Check out www.bigboyzcycles.com compression calculator. You can try different combinations to see what they'll yeild compression wise.