Is elec. choke needed on dual quads

I don't run the choke on my 360 dual quad setup. The only problem I have with starting my 360 is my carbs are usually dry from sitting for a while without being started. Once I have gas it starts right up. Then I have to feather the throttle for about 30-45 seconds til it's warmed up enough.
The 500 cfms on my 360 don't seem to be too much. I have the linkage set up to act progressive, not locked at 1 to1.