I haven't (yet) read all 7 pushes of this, but having attempted to cycle around the world myself (along with my husband) I can say a number of things such as if you want to blog, do so. I did and family and friends followed my updates. I kept a daily diary handwritten had well. Do what you want and if it means a lot to your family and you, keep it going. It is a means of communication and whilst sometimes it was a chore, or felt like one, it has become so very valuable to us since our tour ended unexpectedly 12 months in.
People told us we were carrying too much, well they are not us. 1 pannier alone was medication for a number of serious medical conditions I have and we always had a minimum of 3 months meds for me. we preferred to have tools and spares with us, and not just for the bike but for this like our airmats, the tent, goretex patches for our waterproofs and a sewing kit for our clothing. I often had to make repairs to our clothes, a couple of times to our tent (a lemming chewed it's way into the inner tent in the very far north of Norway) our groundsheet had numerous inner tube patches on it etc. Carry what you want. Your speed and enjoyment is yours and tips alone. We carried 1 paperback book each which kept us company and are frequently traded along the way with other tourers and also swapped at camp-sites.
Another thing we did which proved ideal was to take an advanced first aid course which taught things such as IV, cannula and sutures. It was exceptionally useful and continues to be so.
I also did a lot of photography. Someone calculated that for my blog there was a published photography for every 8 miles... I never owned up to how many are not published. I carried 2 cameras. A small Canon Powershot G10 and subsequently the G11 which both took a polarising filter and take in RAW format and my big camera the Canon EOS 5D mk ii asking with 2 lenses (L series) a limited selection of Lee filters and a polarising filter, cleaning kit, tripod, spare batteries etc...
We too were on (and still have) or Rohloff speedhub (we love them) and also ran into problems though more indirectly (like you). For my husband's it was a small oil leak which meant that his chain was constantly dirty and coated in an oil to which soil and and stuck to. He wore through parts much faster than I did. For me, I had best changing issues caused by the best changer leaking water into the cable and it slowly rusting. It gave up for the first time in Serbia where I was given much help by SJS Cycles from whom we bought the bikes. The water inside the gear run had frozen preventing me from changing gear! In Greece we had to drill out the screws for the gear changer and completely replace the gear changing system.
I think you know by now, do what you want to do. Some people here have very firm ideas on what should and should not be carried. A 2 week camping tour is totally different to a world tour.
Best wishes and hope to hear that you are back on the road soon.
And should you find your way to Australia and into the Canberra area, give us a yell. You are more than welcome to visit our stay. We are on warmshowers as well.
SNSSO