You didn't identify if you have a SC, CC, 2WD or 4WD. According to the Trailer
Life Towing guide, you have a max tow of 11900 to 12500 lb depending on configuration. Here's the link... http://dcd96xmek71bc.cloudfront.net/...ide_lo_res.pdf
The 33CKTS Sabre has a 2048 dry pin weight, 9767 dry weight and a GVWR of 14048 lb. The loaded pin weight/camper weight will probably be closer to 2300 and 11500 using 20% pin weight.
You'll probably be above the truck's GVWR but well under the RAWR but lots tow this way...your choice. The best would be to weigh your truck with full fuel, passengers, gear, hitch, ready to camp and get a more exact payload number. The max tow is limited with that rear ratio.