Thank you one and all for your responses, good to know we don't need to find a used 1 ton with the camper option on it.
As for the camper we believe we want to be well under the GVWR for the truck.
Our experience with the 150 hauling landscape rock, dirt, and mulch is that it was never designed to haul series weight for a great duration without after market upgrades. A yard of rock demonstrates this clearly that a 150 truck is for those week-end chores, its simply not a work truck. But I enjoy mine for all those weekend projects, it tow's a good size trailer nicely and with the 4x4 I can virtually drive through 8" of snow and climb the hill to get into the garage. But under no circumstance would we ever put a camper on it or tow a 5th wheel, thats work for a bigger truck. But again this is my opinion from my experience with its handling, braking and ride with landscape materials. Thanks again.