1-2 pumps and it should fire with no choke and just require feathering of the pedal to keep it runnign until it gets some heat in it. I've never run a choke on any of my Mopars, Past 2 carbs had lilled airhorns.
I am a little scared to run an electric pump. had an instance when I was a teen on my Chevelle where it didn't turn off and caught fire. of course I am sure they have improved them in the last 40 years.
If the ignition or triggering switch is on they run, so does a mechanical pump if the engine stays running. There are some safteys that can be wired/installed into the system but they would fall in that above and beyond realm.