Rather than be marginal or over on an F250, step on up to an F350. Minimal cost difference and you have the peace of mind of being within truck ratings.
Some 5ers are over the 20% of GVWR for pin weight. We are a bit over 21%
If you plan to add an auxiliary fuel tank, be sure and include that weight in your payload numbers on the truck. Also add the weight of a 5er hitch.
And for what it is worth, get a long bed truck over a short bed. The ride on the longer wheelbase is better and you do not have worry about hitting the cab or slider hitches.
Ken
