You already know you will be over the payload of that truck, and I suspect you already are with your current unit. That 2410 lb pin weight on an 3150RL will quickly turn into 3500 pin weight, because everything is on the axle or forward. Cargo alone will put you over.
My 2,580 lb advertised hitch weight is 4,320 lbs in reality when I carry water, over 3,480 just taking it to storage with no food, water or clothes.
The washer (if you decide to get one) sits ON the pin, so that is a direct couple of hundred pounds over what they advertise.
But you already know that.