[QUOTE=cutter99;8251135]
The longer the wheelbase is the more stable the rig will be when towing. But, the size of your trailer should not be taxing to a 7.3 so you should be fine with either a long bed or short bed. You are looking for the elusive Holy Grail of trucks, do if you find a long bed, you may want to snatch it up even though it is not your ideal truck.[/QUOTE]
I have the truck you describe, OP, and its wheel base is standard length-- that is to say, the same length as a regular cab and regular long bed.
The turning radius on Fords, particularly 4WD is abominable, so unless it will be a dedicated towing vehicle and you need a full Crewcab (4 doors) plus a long bed, don’t buy it. That truck will be monstrously long.
Remember that they stopped making the 7.3 in 2003-and-a-half, so you might want to open your mind to other diesels, 2015 being 12 years A. (7.3) D.
If I could choose one, I’d probably look for the equivalent in a Chevy/GMC.