So Heres some updates:
I bought a 7x16 2 axle trailer today! Towed it home about 20 miles without any issues, getting the wheel bearings on it repacked and new seals and all of that. The Yukon XL did "ok" It seems like the trailer was heavier than I had hoped, maybe the bearing work will help that out some.
I found a salvage yard around the corner from my house, was able to get a mode door actuator for $25, and I'll be going back to get a new set of gauges for $50! :-o
I'm just waiting for him to get some more trucks in, hoping to find one with mileage as low as mine (all his have over 200k and I'm at 164k.)