So, by way of an update, I have about 3 weeks to go before the trip, and so far have installed the rear airbags, sway bar, and Edge 15001 programmer/display.
The airbags help a bunch. I put them around 40lbs when towing and 5 lbs without. Took almost all the squat out of the rear. Of course that meant I had to re adjust the WD hitch...
Sway bar has only been on a few days and I really don't have an opinion yet. Nice looking piece tho, seems high quality.
The edge is a mixed bag so far. I like being able to see what's going on with the engine, but the transmission shifts really hit hard now, to the point I'm afraid with a load I'll break something. Yes, it's in "tow" mode...I'm gonna try to soften up the shifts a bit this weekend.
Next up is the trans cooler going in on Monday. It's the Dorman brand replacement for the 6.0, so quite a bit bigger.