Agree with Saxby, Crazy Guy on a Bike is a very good place to post trip reports. And you can give your friends the link once you start one so they can keep track of what you are doing. Some people have their own website, but I think they try to get advertising revenue. The Crazy Guy site is not that user friendly, but many of us go to that site first when trying to research a location that we have not traveled before. My last two trips, I first researched the locations on the Crazy Guy site to see what others had to say.
I do not know if you know how to true up a wheel with a spoke wrench or not. If not, I really think you should find a bike mechanic and ask them to teach you to true up a wheel with a spoke wrench. And I think you should carry the spoke wrench you need for your size spoke nipples, there are different sizes. Then if you break a spoke you know what to do. I noted above you should carry spare spokes. The rear wheel spokes are more important to carry than the front because they take a greater load and the rear spokes are a very unusual length that a lot of bike shops will not have in inventory.
Many other tasks, such as oil changes for the Rohloff, cable replacement for the Rohloff, etc., can be learned from you tube videos, those tasks can be learned later. The Thorn video for oil changes is quite good, even though my Nomad is 4 years old, I still watch that video before I change the oil to remind myself of the process since I only do an oil change once a year.
From what I saw, it looked like you had every tool you may need, but just to make sure you might want to look at your bike with your multi-tool in hand and make sure that everything on the bike has a matching tool. The odds are that you do not have a T20 wrench, that is needed to replace the Rohloff cables and also to remove the shifter from the handlebar. Thus, you should get one if you do not have one. (I am assuming that Rohloff has not changed their bolts since my hub was built.)
That said, there are a few tools that I think nobody carries on a bike, such as the tools to remove a bottom bracket, as if you need a bottom bracket you will likely be at a bike shop so they can provide that tool. Crank arm puller, I do not carry one of those on my Thorn Sherpa when touring because if I have to remove a crank arm I will probably be at a bike shop. You said you have a chain whip, but that would be on my list of tools to leave at home for the same reason. A bike shop however might not have the special Rohloff tool to remove the sprocket, so that tool should be carried.
You said nothing about your touring partner's bike. The two of you will only go as fast as the slowest rider, the two of you will only only enjoy the trip if both bikes work well. So, everything I said about your bike applies to the other bike too.
