If mostly flat land then it will do fine. I am guessing your tongue weight will be around 800 pounds or so which will pretty much max you with 350 for passengers and 100 pounds for the WD hitch. Might be over the cargo capacity by a couple hundred. Biggest issue I see is the soft suspension on the Burb.
If you get the weight distribution hitch set up well then it will be ok. Fairly long wheelbase so sway will be tolerable. Side winds will be pretty noticeable especially out there on the plains. It will be slow so just keep the overdrive off and take your time.
It will not be a tow you will want to make all the time but will work for a one-off trip. It will make you appreciate your pick-up for sure.