Towing Capacity Question

Thanks for all of your help with this. I really appreciate everyone's thoughts. But hey, good news. I just got an email from my dealer telling me that my Expedition will have no trouble towing this camper. He says he will explain it all to me when I come in, but basically he reminds me that we won't be adding weight just to the front, but to the whole trailer. We can just shift weight to the rear to take pressure off the tongue. And with the quality weight distributing hitch he is going to put on it, we will have no issues. (Like Sheldon Cooper, sometimes I wish I had a sarcasm sign to hold up.)