The lift will be determined by how much cam duration @ .050 and the centerline of the cam. So this I can't exactly tell you, as theres too many variables.
As for a stump puller, in your program put a set of 302 heads on your build with the small 1.78 intake valve and a 1.60 exh. valve with 210 cfm's and 120 cc's of port volume on the intake side and see what it shows. You might be very suprised at what it does.
I haven't checked out any of those pistons and instead just remachined the factory pistons now to work, this way the need to look for a special CH is gone. I just buy a good set of stock forged and machine them to the height that I need.