I would go with a 3/4 ton for sure, not that a 1/2 ton won't do the job, but pushing the max weight isn't going to make for the best situation (ie. braking, ride comfort, etc). Also getting a ticket for being over the gvw isn't cheap!!!! We bought a 3/4 ton diesel and wouldn't look back. The mpg is great and nothing like having the extra torque when needed. We towed to Flathead lake in Montana this year and even cruising in the Rockies was a piece of cake!