Bumper pull toy hauler, adding a second A/C unit

Mine weighs about 10,500 empty. We push 14,000 with 150 gallons of water, both fuel tanks full and four ATVs. Of course that is with all the food and other items. We pull it with a 3500 Ram. No problems pulling it around but the 1,900 lbs of tougne weight was a challenge. We ski camp so the added heat to the front would be awesome as it gets real cold up there when it is in the teens at night.