I am wanting to buy a 2021 GMC 2500 6.6 diesel with towing capacity 18,500 and payload 3,760 capacity (fifth wheel). I'm looking at a Grand Design Solitude 12,100 UVW, 15000 GVWR, 2,350hitch weight. I really want this vehicle so I might want to find a lighter fifth wheel. It will only be my wife and myself. We are thinking about going to Utah and Colorado this fall. Any opinions on if this will work.