Edelbrock Head Rockers?

My only problem is the stroker I am building is going to use the ICON forged 21cc dished pistons? I do not believe they come out above the deck? If I use the open chamber heads with these pistons, will that mess up the CR?

I ran some quick numbers on this.......

4.07 B
4.00 S
65.0 cc's ........ Eddy 340 head
21.0 cc dish
.000 deck ht.
.039 hd gasket
4.18 gskt dia.

Came out right at 10.0 to 1.