I agree 100% with what you just posted. :) My concern was with your low pin weight and what could happen if you moved the pin to the rear of your truck. It would act very similar to a standard travel trailer and I know how those react to low tongue weights. No reason for a 5th wheel to be any different if mounted in a similar position.
I have personally seen a small two wheel utility trailer yank a full sized pickup off the road because it started to sway badly from improper loading of boards purchased at Home Depot.
Ended up turning over the trailer, spewing boards all over, and leaving the pickup in the ditch.
Barney