If you're hauling lotsa gear, put the spare tire and jack out where you can get at it.....
Those undercarriage spare tires can be a PIA.
I haven't changed a tire on the Alcan in 3-4 decades.
LOL I bought expensive Michelin 100K treadwear tires... had not had an issue in years either. Then had a road hazard get us on the road in heavy traffic last fall. I got to the tire just fine. But somehow I had the dang jack buried. But I had a 10 ton bottle jack at the tailgate. Luck! Nope, I needed the long jack rod to get the spare loose from undercarriage... I dang sure will have a "loose" spare available, even if I have to put it in the back seat. And one up under too.
To all so far, You have certainly noted some things that I may not have thought of and I appreciate it much so far.
Also noted plenty of things I KNOW about, but could possibly forget.
Thanks, Jeff