You really need to weigh your truck and subtract your payload on your door from that. My my gross weight rating of my Ram is 7,100lbs. My door sticker says 1784lbs of payload. My truck actually weighs My truck weighs 5760lbs with a full tank of gas and just me in the truck. That really only leaves me with 1340lbs of payload. You have to figure around 12% for toung weight plus a Weight distribution hitch. Always go by gvwr, empty weight don't mean crap. Our trailer is 26' from bumper to hitch and weighs 5,500 loaded for travel. With you're family of 5, I would consider moving up to a 1 ton truck of your choice and then looking at travel trailers.
