I'd go to a CAT scale and find the actual weight for the truck and, more important, the weight on the rear axle.
My Ram had CAT numbers about 100 pounds better than the door sticker, and that was with full fuel, me and all the miscellaneous stuff I carry in the big truck box mounted in the bed.
At some point during every day you suddenly realize nothing else productive is going to happen the rest of that day. For me, it usually occurs around 9 am.
Vengeance 25V (the Harley needed a home)