I had a friend pull my fifth wheel home one day, and I was surprised how easily it handled the camper. My fifth is 7600 lbs dry, and it was fully loaded for camping, so probably in the 8500 lb range.
He pulls a slightly lighter fifth, about your weight, and has no issues whatsoever.
His empty gas mileage isn't as good as advertised, although he doesn't drive slow. He says that if he stays out of the turbos, it will do slightly over 20 mpg.
All things considered, he really likes the truck. But he does have all of the towing options, so it isn't a cheap truck.
If you aren't stuck on Ford, Dodge is coming out with the big hemi in their 3/4 tons in the fall. That would pull the heck out of your camper!