thomas201, I applaud you for your attention to the numbers.
IMO using numbers is far superior, and safer, than the "seat-of-the-pants" approach some take to gauge drivetrain, frame, and suspension stress.
We recently upgraded from a 1/2-ton gasser to a 1-ton diesel after we got tired of dealing with numbers similar to yours. The improvement in our towing experience (safety, stability, reduced driver fatigue, etc.) has been phenomenal.