I have clocked a short 40 mile run, transit can hold 70mph no problem on the flats, Coach has more sway than I like when I tow, my initial thoughts are that I will add some helper springs in the rear, couple freeway transitions held 50mph, but front felt a little light. I am thinking of going with a combination of
https://timbren.com/blog/products-page/frtr350hd/ and
https://activesuspension.com/product...d-transit-350/
Probably start with the timbren
Also make sure that you are running some type of aux brake for your toad, I run the RVIBrake3 and it works perfect for my toad, I had to set it for a big suv
so that it would increase the brake pedal pressure, those 35" tires require a little extra pressure.
If a jeep is your preference a YJ or an XJ 2DR might be a better choice, I am also considering a 01-07 Escape or a Geo/Suzuki Tracker