There simply aren't many 1500 TC options. The TC brochures that claim a TC fits on a half ton are about as close to a lie as you can get. IF you had a 2wd, reg cab, long bed 1500 with no options (manual windows, vinyl floor, etc) and it was only the driver and not much luggage you might make it work. That's about the only way.
I'd be willing to bet that after you figure passengers, pets, gear, fresh water, propane, food, etc. you will be over weight with even the Lance 650.
I once had a 1500 Dodge and an 8' pop-up TC. I was 600 pounds over the truck's GVWR with no passengers and very little gear.
I've since upgraded to a dually and I'm still over my GVWR with an 11' camper.
Truck campers are heavy.