Tom, I would not put the hubs in when you leave. This is the beginning of where all those little personalities I mentioned in the other thread will start to come out. If you see ice or a major amount of snow on the road, that would be the time to put the hubs in if you feel better with 4WD but I wouldn't drive for extended periods with them in if you can avoid it. Yes the drive shaft and all else turns with hubs engaged. The front just doesn't get power delivered to it from the transfer case till that's engaged. Extra wear and tear and vibrations at that point, when not even engaged yet.
If the seats haven't been altered then you won't need ear muffs for warmth. Your knees will be around your head anyway.
This ain't no
Rubicon ya know.
I'm sure you'll really enjoy the trip up, but I bet you'll also avoid longer trips with it in the near future. I do look forward to seeing a road report when you get back. I also look forward to taking a look at the new rig.