Checked out 2002 Monaco hitting the road next week

Before putting on the new tires go to a truck stop with Cat scales and get your axle weights with full fuel. And 600 lbs to the rear axle if no water and using the load table for your size tires (I add 5 psi) tell the tire dealer how much air to put in your new tires. New tires with max pressure in them can make a good handling rig a pos.
It's easy to over steer a 40' MH so give steering inputs a little longer to take affect and with practice smaller inputs. Have fun in Florida.