You always end up putting more stuff in a trailer since you have the room so it will probably get close to the GVWR. What is the GVWR of the trailer? This is the number you should be looking at for a tow weight because odds are, you will get close to it. You could take it to a scale to weigh it (empty and loaded) to get a better idea. If you plan on camping off the beaten path where there is no water source, don't forget to add in the weight of the fresh water in your tank.
As far as the Expedition, do not forget to add in all the people and anything they might bring in the vehicle as well as a full tank of gas. You will need a weight distribution hitch and it may be a good idea to get one with integrated sway like the Equalizer. This will make a big difference. Personally, I would not want to tow your trailer with an Expedition, it is a short wheelbase vehicle with a long heavy trailer and would be around it's maximum capacity. You will also want to look up what you Expeditions GCWR (Gross Combined Weight Rating) is. This is the tow vehicle weight with everything in it that you would be hauling AND your trailer loaded for a typical trip.
We have had a number of trailers and tow vehicles and our current setup is great. We have a 2011 Chevrolet Express 3500 van with a 6.0L and a 12,000lb Equalizer Hitch towing an Outback 301BQ. We are under our GCWR and have plenty of power and nice ride and handling.
Last edited by comanche38; November 1st, 2013 at 06:18 AM.