U-Haul is the most convenient. But their tarilers are overbuilt because they know people will do werid and dumb things.

A nice car trailer is around 1800lbs for an aluminum one. See if you can find a place that rents these locally. I've towed FD rx7s with my 4runner and these nicer car trailers and without and load balancer or air bags the 4runner towed fine on flat highway. On hilly highways it was not good, I had to use a lot of throttle for holding 55mph along highway 280 in NorCal.

I don't regularly tow such a thing. Maybe twice a year.

My advice. Ditch your road side assistance via your car insurance. Get AAA plus or primere with the 200+ mile flat bed tow. You can use it for your 4runner too if you need roadside assist since 2016 is way past the Toyota free road side assist.