Alright guys, thank you for helping me, we purchased our TT today, It is a 2011 keystone summerland, 2670BH. Dry weight 5680, 2003 yukon xl weighed on scale loaded 5900. Estimated tounge weight at 6680-7600lbs (GVWR), at 10-12% 700-900 lbs, 150lbs for reciever put me right around my GVWR of 7000lbs. I think we will do alright with this setup. I am so glad i did my homework and didn't by the junk of you can tow up to 20%, I would have been way over.
I now have to figure out what stabilizer bar to by, I already have a 14,000lb max wdh from reese. Either dual cam or equalizer, have not figured it out yet.
I will let you guys know how this tows.