Upgrading from a 1999 Coleman Bayside 2595 lb. to a 2002 Flagstaff 829BHS TT 4098 lb.(Dry Weights). My tow vehicle is 1997 Ford F150 4WD 4.6 litre. 3:55 axle. This truck has no tow package, only a class III hitch and a Tekonsha Voyager brake unit that I had installed to haul the Coleman. The manufacturer's tow rating is 6600 lb. I know I'll need a heavier ball mount and weight distribution bars. Will it tow O.K.? Will I need a transmission cooler? I have never towed a trailer this big. Any information out there would be helpfull.