I'm inclined to agree with this statement, only thing I'll add is chassis stiffening otherwise it sounds like you have it pretty well covered, and any aluminum you put on that engine will be a nice weight savings.
That actually might be about right :) ought to be a thumpin 440 I would think...but your converter speed would need to go up...3k-ish? These are all JMO, though...there are much better big block builders on here...