Choke thermostat /RAGE

to me it sounds like an ignition problem . I went through the same thing on a galaxie . carb was full of junk from sitting ,rebuilt it adjusted the timing cleaned and set the points it helped but wast right still had a stumble and noticeable miss while driving and would stall sometimes taking off .
i put a points eliminator kit in the distributer timed it and wow it was like a totally different car .
if you can try one of the points eliminator kits, accel ,pertronixs, and a few others make them and they arent real expensive . Another option is a junkyard distributer out of a 73-76 slant