OK you have convinced yourself you need the latest kit ,

as someone who had already plodded my way thru a few long trips , I appreciate the functional simplicity of these
German Precision oil dampened needle bearing planetary internal gear hubs

Never have to look on my R'off no pattern to follow , one ratio follows another, in a line.
13.6% gear ratio difference between each over a 526% range, with one chainring,
add a 2nd chainring and there can be a 6% difference , just A/B an half step, switching between the 2.

and there is only 1 cog to replace, can use any 3/32(or 1/8") chain, ..
they last longer if not flexed sideways.
and so thin to work in such narrow gaps of packing in 10 in the space of 8..

Bring funds and staying in Hotels and B&B's will let you travel really light, and the money you dont spend on High tech Camping gear will go a ways on nice dinners, hot baths and clean sheets.