Ok so here are today's weights. These are with a full tank of fuel, family in the TV and trailer loaded up with everything except food.
Truck no trailer (reese 16k hitch in bed)--
Front axle 4900 lbs
Rear axle 3380 lbs
Total truck weight 8280 lbs
Truck with sabre attached
Front axle 4900 lbs
Rear axle 6000 lbs
Trailer 9760 lbs
Total combined weight 20,660 lbs
Truck specs
Gvwr 11,600 lbs
GCWR 24,500 lbs
GFAWR 5600 lbs
GRAWR 7050 lbs
So it looks like I have a 5er weight of 12,380 lbs and it looks like my pin weight is 2620 lbs. My available payload without 5er was 3320 lbs so I'm well within specs.
Measurements
Truck no trailer, front wheel well 40", rear wheel well 42 1/2"
Truck with sabre attached front wheel well 40 1/2", rear wheel well 40"
There is 7 1/2" clearance between the bed rails and the 5er.
The front and rear corners of 5er both measured 26". I forgot to measure the kingpin height and will have to get that another day.
I'm thinking I might be a tad nose high. The reese is currently on its highest setting. I'm thinking of dropping it one hole.