Edelbrock Pro Flo 4 EFI

My friend has a dyno, so we decided to spend a few hours to find out whats happening. And seems that I need a bigger cam, engine can take only 30.25 initial timing. And I think thats because of my 8.3 dynamic compression. But, it pulls strong to 6000 and Hp is rising all the way, torque curve is flat from 3200 to 5200.

I've always been confused on how to arrive at dynamic compression. It's something regarding how much compression is left after the cam bleeds some off. So, where do you want to be? Some where around 8.0 or a tad less? What are you cam specs now?