Don't worry about the heads. Run a cam that wasn't designed 30 years ago. The MP grinds are all old technology and junk IMO. I wouldn't run another one if you gave it to me. I recommend one of the LUnati VooDoo grinds. Also, if it's power you're after, ditch the Edelbrock carb and run a Holley 750 vacuum secondary carb. I'd bet that the Holley will make 20 hp more than the Edelbrock.
I have heard the same from several sources about the carb so i will stick with the holley. As far as cam selection, what will yeild the most power without being impractical? This will be a street car and i want it to be drivable.