I think the tow rating is 7,550lbs with 3.55 rear end, and 4,600 with 3.21 (this is for crew cab 2WD). I have a 2015 with the 3.6 and 3.55. My trailer ready to travel is 5,400lbs, and it pulls it fine. I tow in 6th gear, which is 2,500 RPM's at 65MPH. It will shift to 5th on anything more than a small hill, which is 3,000 RPM's. Since these trucks shift so smooth, and are so quiet, no one would notice but me. I think you would be fine with the rated load (4,800 lbs).
CT51