It sounds like a common combo, the piston and cam choice is what many people migrate to. My guess would be somewhere in the 310 to 330HP range. I'm not a fan of the 4160 carbs. A nice Holley 650DP 4777 would be my choice.
Thanks for taking the time to share your thoughts, i have all of the measurements for doing the compression calc. except the cc.volume on the heads. But was just curious on others thoughts.