Expedition tow vehicle

I have a 14 Expedition Limited and even though I have never pulled a travel trailer with it I have pulled my boat( 7,000 lbs and 680 lbs of tongue weight). This is all the load I would ever want to pull with it because the suspension is to soft. Going down the road it is ok but I am always afraid in the event I have to make a quick maneuver the boat would decide where we go. The power from the 5.4 comes in at a high RPM and a boat has very little wind drag so it may have a harder time with the large frontal area of a travel trailer. If I were in your shoes I would not do it based on the fact you will be at the top of its capacity and owning one myself think that 9200 lbs is a stretch to begin with. And yes mine has the heavy tow package also.