We towed our first FW with both long beds and short beds and found no big difference. When we did get the short bed, we got a slider hitch because the turn to get backed into our parking place was a little tight, unless I drove a long ways up the neighbor's driveway. Bought a new FW last year, Jayco Eagle SuperLite HT 26.5 RLS and towed it both with a long bed Dodge and a short bed GMC and noticed no difference. Still have the old slider hitch, but with the way they are making the fronts now, no real need for the slider, yet. My last three trucks, GMC, Dodge and GMC have all been crew-cabs and would not go back to an extended cab for anything. You should have no problem towing your new FW if you get a short bed truck.
2012 GMC 2500HD D/A Crewcab
2012 Jayco Eagle SuperLite HT 26.5 RLS
2009 Crestliner Superhawk 1900
2013 Polaris Sportsman 550 EXP
2008 Polaris Sportsman 700 X2