The published weight of the 865 is 1870 lbs. and that is supposed to include the weight of full LPG tank and the battery and a full fresh water tank. In general if you take the published weight and add 300 lbs. you will be close to the probable weight for the camper. Add in 400-600 lbs. for gear and food and you approach the 2700 lbs. number for the wet weight.
A 2500 class truck can easily handle this load. If the camper when on the truck results in the rear sagging a bit you can add SuperSprings for $450. Tires are the other possible weak link and if you take your truck to a CAT scale and weigh it and it comes in at 3200 lbs. at the rear wheels then add that to the 2700 lbs. for a 5900 lb. total and compare that to the load rating for your two rear tires. If it is 3195@80 PSI then you have a roughly 500 lb. extra load capacity. Ford trucks have more frame flex and if this is a problem then you can spend another $400 on a Big Wig anti-sway bar which will help.