I haven't done U-Haul since 1979, for apparent reasons.
First, get a diesel truck. Mileage is much better; gas engines only get
about 5 mpg and the trucks might do 50 mph flat out.
Second, have a partner to trade off on driving. You'd be amazed how
tiring driving a truck at 50 mph can be. And take plenty of breaks.
You'll have to when you get gas/fuel.
Good luck . . let us know when things are set up down there, I may make
a road trip south to see the goodies . . . . .
Gary Hildebrand
St. Joseph, MO