Diamondpilot, let me ask this: If a memeber of your family was involved in an accident {serious injury or death}with a setup like this what would you do?
I did own a dodge 1500 with a heavy duty tow package and trailer break. I used it to pull my compact tractor around {around 3600lbs +weight of trailer} it worked fairly well for that. Then I got a compact dozer weighs around 7000lbs + trailer in NO way was this a good setup. I would bet, if I had been in an accident there would have been lawyers knocking down the door. I drove tractor trailer for many years, so I do have a small understanding of loaded vehicles. Just because the power is there to move something does not mean the weight/size is there to stop it.
So this isn't safe either.

IMO the trailer should stop itself.
I just bought a w3500 and it has a sticker rating it at 14000 GVW on the driver side door opening
Yes the GVWR but not the GCWR.