The V10 Triton does shift high, they are meant to rev up higher than you may expect. I used my parents 35' A class with the V10 and I was babying it, untill my Dad (Mechanic with over 50yrs experience) said not to with that engine and transmission setup. So it shifts around 3000 - 3500 rpm depending on the grade of the hill. Seemed really high to me, but actually ran better and ended up with better fuel economy. I would suggest you do a little research on your particular engine transmission combo and see what it was designed to shift at.
I understand that backing up with the tow dolly is a bit challenging, may want to either avoid it or try it somewhere you have extra space.