Getting The Right Compression Ratio...

I'm about to get my engine back from the machine shop, with the rotating assy. already together, and torqued properly. I plan on getting some edelbrock performer heads, but I'm not sure what I need to get 10:1 cr or better.

I have a '73 340 bored .30 over, decked just enough to clean it up, and I ordered the kb243 (6cc flat top) hyper. pistons. Again, I plan on using the eddy heads, so am I getting close to 10? Or is there a couple of things I still need to do?

Also, what eddy head should I get? The standard, or the 340? I only see a difference in 2cc.