Tuning with jets, Power valves and an O2 guage

I have a 499 stroked/bored 400 with similar cam.
I run an Holley 850 DP, and yes that combo wants fuel.

I too opted to run a wideband and after reading some articles about some engines can idle/transition well as lean as 14:1 there is no way with a carb setup that's going to happen.

I now idle just above 13:1, had to increase my pump shots ( to cover that initial lean condition when getting on the gas ) dropped my PV's ( running front & rear for street driving ) and I would have to check my notes on jetting.

Also, what's you timing set at?
You are going to want ( someone back me up on this? ) more initial timing than a standard big block.
I currently run 20 degrees initial 38 total mech. adv. only no vacc.