Here's the new rig, finally together.
I took the trailer in for little warranty items in early April, a couple of days later bought this F150. 6+ weeks later I finally picked up the trailer and the dealer adjusted the hitch and swapped brake controllers.
The reason the work took so long was mainly because of the microwave. It was getting condensation in the door glass, meaning it wasn't sealed properly. They duplicated it and said it should be replaced. The replacement unit didn't work, and then Rockwood decided to completely replace this brand (Hamilton?) with Magic Chef, which took at least 3 weeks to arrive.
On the upside, while it was sitting there I had them reroute the water line to the bottom of the fresh water tank (I had written previously how the bottom 1/3rd was wasted and not sucked into the pump), which they did a great job - at no expense!
On the downside, the heated mattress was replaced due to the door under it tearing the bottom (sharp edges). They didn't soften those edges much and it ripped on the first time it was raised and lowered - right at the dealer! Another mattress on the way, and this time they put in foam sticky tape at least.
