You will be fine. With a 5th wheel, a 40 footer is only 32 behind the truck so in reality, easier to tow then a 32-35ft TT and with a long bed, you can always get that 90 degree Turing radius.
I would say, as long as you have a 1 ton long bed, you should be fine and not limited to any style fiver. I personal prefer the dually towing experience but my last 2 trucks were SRW. Enjoy!
2014 V-Cross Platinum 365VTSB (Bought Labor Day 2014)
TV: 2016 GMC 3500 Denali - Stock for now.
Days Camped 2015: 17
Days Camped 2016: 28 so far