Frazior, I am in a similar situation to you. We bought a SV-294, really wanted the 304 but since we were towing with a Chrysler Aspen (just like a Durango) it had a hemi so I was not really worried about the power. I also bought a Hensley Arrow, drove 200 miles to get the trailer mounted the hitch in the service bay at the dealer and hauled it 200 miles home. After having it all for a year my only regret is that I did not buy the 304. I have no problems hauling it what so ever.
2008 Cadillac Escalade
2010 Surveyor SV-294
Hensley Arrow Hitch
Hensley TruControl Gold Brake Controller