This is really the most important part. If you're really gonna put some miles on it, then the old school, soft ramp cams like "Rusty" spoke of, may be your best bet.
With the comp. ratio, gear and converter you're talking about, you can go more aggressive with the cam choice. If you decided to go bigger, a 750ish carb should probably be part of the plan also.
There's nothing wrong with your original plan. You just need to weigh drivability and the amount of street miles vs. performance use.
