I was in overload situation when I bought my Fleetwood.
Knowing that this might happen I bought the heaviest tires I could find for the truck.
Drove it home 2500 miles on overloaded tires and then at home, removed generator and one of the propane tanks, moved spare wheel on front bumper, so I could use the camper wet and I would not worry about axle bearings overload.
But what was always on back of my head, that with camper standing above 12 tall, the center of gravity high and lot of rear swing, simple flat would end in the ditch no matter how good driver I am.