Ours is 7500lbs gvwr. Bilstein rear shocks help. With the Hensley, you should be fine, but as stated the tongue weight is horribly optimistic. Ours lists as 592lbs. We’re over 1000 lbs every trip. Propane tanks and battery aren’t included, to say nothing about items inside. The trailer you list is also 34 feet long. Without the Hensley, I would be careful with a 145” wheelbase truck.