Look at a non slide models.
Look at the GVWR like 6000-6500# or less.
that's where you will be when all loaded up. TW will be about 12% in general .
Ex : Jayco jay flight 23RB or MB offers queen island walk around bed, dinette, decent bathroom and sofa in a non slide unit . You also save weight by using aluminum siding rather than filon .
If you park somewhere then fill it with water, you save the transport weight of the water. Jayco ELITE package offers a 90 gal. water capacity , nice for a boondocking longer stay .