I have a 2008 Durango with a 5.7 hemi and 355 rear. Should tow 7200lbs but I'm told not to go more than 20'. I like the MXT184 that is 24' total and weighs in at 4050lbs dry. I'll put two bikes in at 1200lbs. Thats around 5300lbs. Will my Durango handle it with comfort or not.