Enclosed trailer/toy hauler advice

I would not recommend that to anyone. Ya you might get away with it, but............no, not even for open bed. By the time you get your "stuff" personal, tools, car, etc, a 1/2T is up against it. The heavier duty axles, bearings and brakes will be worth it
I pulled my 11K lb 32' LQ trailer with my 2000 Ram 4x4 1500 5.9 gas engine through the mountains of PA with no issues, and the modern half tons can tow 12K lbs! I do agree though, I haven't pulled with a 1500 for 15 years now...