I have about the same RV. 2012 Heartland Landmark Key Largo its weight shows 16,200 lbs. 41ft long. Ours has 2 acs, 3 flat screen tv's, Washer/Dryer, Auto sat dish, full body paint, 4 door fridge, Generator. As you can see its loaded and weights about as close to the 16,000 lbs as you can get.
Pulled it first 2 seasons with a 2004.5 Chevy Crew Cab 4x4 short bed 2500HD. It pulled it but you know its back there. MPG was sad running I-40 East and back west in Tn. Averaged 7 MPG pulling the camper. But we did have high winds both ways. From New Orleans La to west Tn when we picked it up averaged 9,7 coming home with it.
Now using a 2005 Chevy Kodiak C5500 crew cab with a transplanted 2000 model 5.9 cumminsn out of a Diesel pusher. I get around 10 MPG pulling it with ease. 5 hour trip now is relaxings. Before I was dead when we got home from the same trip.
Pete
P.S. Forgot to add being your not going to be moving it that much. You can get by with a 3500 short bed single wheel truck. But if you do get where your pulling all the time. Dual wheels are nice.
