I have a 2021 jeep cherokee limited 6 cylinder. I will gobto Uhaul to install a trailer hitch. I believe the hitch says 4500 lbs max. Does that mean I can pull 4500 lbs if I was towing with a auto transport and a car on top?? I want to go to PA for Ford Nationals with my 1966 Ford Mustang inline 6.