The only thing on that list I question are the "Braided stainless ignition wires". I used to have a '69 427 Corvette that had the factory style braided/shielded spark plug wires. Then on a very dark night in a place with ZERO light I opened the hood with the engine running(why I do not remember) and I could see the little blue arcs of electricity between the wires and valve covers, you can't see it in daylight but it was there!
I would bet with the high output coil being on the list of parts you have there is some voltage loss going on. I know SS braided stuff looks good, but a good set of high performance wires would probably give you some extra spark to burn the fuel that big carb is squirting in
