BB Mopars are tough to start after a couple days especially with todays fuel. You should really have a choke, makes life a lot easier.It's really tough to hit the sweet spot before flooding. As was said, verify power to the coil in start mode. You may want to also verify spark voltage with an engine analyzer, you may have a weak coil, a bad connection or other bad ignition parts.
I have a 440 in a 69 GTX with stock AVS carb and stock choke. The guy that restored my AVS gave me this procdure, works every time. If it's set more than 2 or 3 days; Without pressing gas pedal run starter for 10-15 seconds. Pump gas pedal 2-3 times, (this sets choke and gives accelerator pump a couple shots), it starts right up. Of course if you run it daily, before the gas evaporates, just set the choke with one push to the floor and it starts instantly.

Jim