OP, you are expecting to have 1600 lbs of 'stuff' in the toy hauler? If you take out the 1000 lbs for the quads, that does not leave you a lot for the other 'stuff'. What engine does you have in your truck? Is your truck a long bad or short? I would suspect it is a long bed, which would handle better towing. I am not up on Fords! Even though the truck may be 'rated' to tow 7200 lbs, I would suspect that you will loose some power in the hills. As long as you are aware of this fact, you should be fine.
Good luck and enjoy your upcoming adventures!
2009 38' Diplomat
CSM- retired, wife as co-pilot
Reka & Ali providing security (our 2 labs)