Charge attack has to be a straight line to your target, and its just barely making it with no dead bodies in the way. Ending just slightly to the left of where the door is. You're gonna use a strength check roll against the caravan (basically ramming it with your shoulder) It has a +2 bonus to the attack roll It would be a charge and bull rush attack, because you're not actually trying to do damage, but trying to just push/shake the caravan.

you're gonna roll a d20 +3 for your strength and +2 for charging into the bull rush of the caravan.