Carb suggestions for 360

So a 750 DP sounds about right for this setup? The carb seems to work really well except for the off idle hesitation, and has no leaks, but takes so long before it will run without holding the gas on startup when cold. I could probably deal with it. I cant seem to get the idle too much lower than 1K, I think due to the butterflies being drilled, I'm guessing it was done because there was a more radical cam in it at one time.

I quess I'll play with it and see what I can do before dishing out $ on a new one. Still need to play with timing a little too, have it set at 14 initial, and have vacume advance hooked up.

But if I do decied that a new carb is in order and want a choke, what would be a good choice?