Snarkee, these are my numbers with what we tow. It is not something that I would prefer to run across the US with but that is because I am new to this and still trying to get comfortable. Trailer was 5680 dry.
It is a 2004 Yukon XL towing 2011 keystone summerland 26' bunkhouse BHSS. The Yukon xl is 7000 lbs GVWR, 13000 GCWR. 3000 FAWR, 4200 RAWR. I have four kids 10, 8, 4, 2. Two dogs 40lbs and 10lbs, me and wife. We did this on the way back from a camping trip so add maybe 60lbs for food consumed?
TV 6170
w/o WDH
Front 2640
Rear 4220 6860 Combined
Trailer 5680
w/WDH
Front 2940
Rear 3820 6760 Combined
Trailer 5800
Gross 12560
The way I am reading this I am under my GVWR (240) and GCWR(440). My trailer is 6370. TW is 10.8% or 11%. I am under all my limits.
Just a disclaimer, the TW before we added food and clothes was about 13% and this was after we drained about a tank and a half of propane.