Tunnel ram or no tunnel ram...

I will see how it behaves, I did some miles today and I am very surprised how civilized this is. It was on the rich side but I will play with it a little tomorrow and see where I end up. I have no problems playing with carbs.
What in gear afr should I target with this setup?

Never target a specific A/F ratio. Pump gas varies widely, as do different race fuels. No two O2 sensors read exactly the same either.

Tune the engine so it’s “happy” and use those numbers. Then you can tune from there to get your tune up down to the gnats behind.