Well, that's a lot to consider. For what it's worth, I have kept the speed down to 65mph or less 99.9% of the time. Going faster seemed dangerous. The truck does not sag at the rear when I put the TT on the ball. The whole rig, TT and truck seem very level to the naked eye. The sway is not that extreme (so far). Who knows what it will be like with Kansas crosswinds.
I am taking the TT and truck to a RV Service place here in Atlanta and having them go over the whole setup. Hopefully, they will be able to weigh and tell me how far out of range I am, if any.
Thanks for all the food for thought.
S