All terrain towing - what's my limit? '03 3/4 6l 4.10 burb

More accurately, I have the 2003 GMC Yukon XL K2500 6.L 4.10 with Quadrasteer. Stated towing capacity of 9,300 lbs and a GCWR of 16,000 lbs. Looking for a travel trailer for me and better half. I w...