Carb choice for a mutt motor.

I appreciate the input. Let it be known that I have all the resources for tuning and such. In another chapter of my life, I was a certified BMW tech. I transitioned from cars to motorcycles because that was where my heart was at the time. I still buy and sell bikes as a hobby, but due to heart health and surgeries, I've returned to square one. I also took the misguided turn and became deeply involved with building and racing Cleveland powered Fords. Again, many years and careers have passed since those days. Some things need to be learned and some unlearned. One of my first discoveries was this 318 has a 273 harmonic balancer on it. I've already installed the correct timing tab on the block. There are simply so many unknown factors with the engine, I really wished the builder would have documented everything done to it. Since that didn't happen, I will systematically figure out what I am working with.
As stated, I am actually enjoying solving the puzzle. I haven't been challenged like this in a long time. It's good for the soul.