You nailed it that's all correct. I might just trade it for quad cab and 4 wd. When I bought the truck I was not planning on towing much. I guess plans changed.
4wd=less towing capacity (it adds weight to the truck)
I was in a similar boat yer in, except my TT is 35' long...on my '13 1500 Laramie, I did airbags, then did a 4:10 gear ratio...sure they stiffened up the rear end and made it "easier" to pull, but I was still dealing with the overall weight...and it seemed more like the TT was in command going down the road vs the TV. didn't help the fact that by the time the TT was attached to the truck, and I jumped in it....I was probably overweight..
Then I got the 2500 CTD once reality hit me on what I actually needed and the first tow proved that. no more inner freak outs while going down the road.