We went from 32 ft to our 40ft for our latest RV. Since our present Monty is our 5th RV and we have ranch trailers nearly as long, I am used to pulling a trailer.
Truthfully, I did not notice almost any difference pulling our 40ft Monty compared to our previous 32ft JayCo, since I payed attention turning and backing with both.
Our Monty, at 12ft, 6in, is one foot lower than Semi Trucks so the height is no problem so long as I understand to watch for anything that a Semi cannot handle. Where a Semi can go any RV should be able to go with no problem.