I would appreciate any advice before I buy a new truck. I need to tow a travel trailer with a GVWR of 7000 lbs. I want to put 700 lbs. of dirt bikes in the truck bed. I live in Colorado, but eventually want to travel the US & Canada. I am considering a Chevy Silverado 2500 HD or GMC Sierra 2500 HD: gas V8, Trailering package, 4x4, 18” or 20” wheels, 6 speed automatic transmission. Really don’t want the up charge of a Diesel engine or increased maintenance and price of diesel fuel. Am I crazy not to go diesel? The GCWR of the truck I am looking at is 10,500 lbs. and the tongue/hitch weight of the trailer is 650lbs. I will use a stabilizer hitch with sway control and add trailer brakes. Thanks in advance for any advice.