Well, yea, besides the cams short comings, it's not to bad. A change would be better of course.
In general, is this project going to continue as a "On the cheap" project until the money allows for better parts to be purchased? I'll need to know the mind set so I can comment further rather than say, "Oh just spend the mponey on a HOlley 750 HP and be done with it!"
While it would be a great carb to get, the price tag is steep and several parts could be purchased in it's stead.