Too bad the deal didn't go through for you with the 2318. But the 2514g's are nice. I think he is right on towing with the 1500. I have a gmc sierra 1500, and although I don't usually tow the camper with it, I have without any problems. I usually tow the camper with a 2003 trailblazer. And my boat with the p/u. The reason being is my wife feels more comfortable driving the trailblazer and towing the camper.
2013 Rockwood popup 2318 g. TV 2003 trailblazer and a 2013 SLE Sierra p/u