You can run without a WD hitch. I am running my PUP and Minivan combo without one and everything is in spec... I do use a sway bar.. I highly recommend it.
Just make sure your draw bar and Hitch is rated to carry the weight.
Then you can weld on two sway bar tabs so that you can run DUAL friction sway control with your trailer. (If its over 26 ft)
Here is what I am talking about..
This forged draw bar is rated for 1,600 lbs of tongue weight and 16,000 lb trailer weight.. It is much stouter than a regular draw bar.

Then you will need a few of these tabs and weld them to the draw bar, one on either side.

I would imagine that your rig will tow great as long as the receiver and the draw bar are in spec.
Thanks!
Jeremiah