I'm looking into buying a 30' ultralight travel trailer. Here are some specs: UVW (dry) 6805, GVWR 8800. I currently own a '03 Yukon Denali and I'm looking to change it to an '06 Expedition. I'm looking on the web to see about towing capacities and I'm getting confused. I know that the first generation of these don't tow as much as the second and third do. So, can someone give me advice as to what weight would be the maximum I could pull with an '06? The door jam of the Denali says GVWR of 8200 lbs. Does that mean the trailer I'm looking into is 600lbs too heavy?