GMC Acadia (or the Chevy or Buick equivalent). 4500 lbs towing capacity. The 4300 lbs you have now plus you at 200 lbs gets you to the limit. So no passengers and no other stuff in the car.
You have to look at the footnotes attached to the towing specs.
I have no idea how it tows, but I like the looks.
Maybe it is time for the lightweight aluminum Serpent Express trailer.