Hi All, OP here.
The Nissan Frontier GVWR is 5815 lbs.
The Nissan front axle GAWR is 3296 lbs, the rear axle is 3331 lbs. With travel trailer loaded, I estimate the tongue weight to be around 650 lbs.
The Micro Minnie dry weight is 3705 lbs. The front end of the Micro Minnie is curved, and hopefully will help on wind resistance.
http://winnebagoind.com/products/travel-trailer/2016/micro-minnie/overview
Traveling with water tank empty, the 2 passengers and cargo will be around 800 lbs. Full gas tank around 100 lbs.
Thinking of requesting an Equal-i-zer 4 point sway control hitch. The Micro Minnie will have two LP gas tanks and 2 batteries.
So I estimate towing around 5,370 lbs.
Kind of like calculating weight capacity for a lift-off from Cape Canaveral...
Philip