My vote is you can do it but it won't be comfortable. A quick rule of thumb is @ 80% of listed towing capacity to not be a white knuckle drive. That is 5760 lbs. Loaded I would guess you will be at about 6300 lbs. If only short trips on fairly flat ground it will probably be fine. Just remember, there is a difference between " i can tow it" and "it is a comfortable tow". If it is an uncomfortable tow, you will probably end up not using it much. My F 150 is rated to tow 8500, I am only towing about 4500. It tows like a dream. Could I go heavier, yes, but I will keep it to about 7000 or less GVWR. You should get a LOT of responses to this from "you need a dually" to "You can go way over the limits if no one is looking". You were smarter than most to have asked in the first place. Qudos. YMMV
