UPDATE:
I am typing this sitting happily of the sturdy swedish rear rack of my somewhat dull, but complete and smoolth-running Twenty folder.
It has been a rough week, I had a beloved bike stolen from me, recieved a nasty infection from a deep pedal gouge to my shin, and spent the last day wrapped in blankets with a blistering headache.
However, having scored a mint twenty for a great price, I am ready to start the preparations for a journey! Not to mention the token month of careful disassembly, cleaning, polishing, oiling/greasing, and reassembly of the entire bike, sourcing of new parts, and surrepitous testing and adjusting until it is comfortable.
It was a good fifteen kilometer ride home and I completed it in good time, with no discomfort. Immediately required is a long seatpost, that is going to be important, as I am 6'2" with long legs. The pedals will also have to go, they are rubber and flat, and slippery as all heck. Would make a great beach bike as it is now, can be ridden barefoot!
I think I will have it remain original for the city, and swap out bits and bobs for the tour. I doubt I will want to re-lace the original SA hub to a new rim, instead I will keep a weather eye out for a new SA hub or related internal gearing hub and lace that to a new rim. The chrome fenders and heavy rack are a lot of weight, so they will have to be swapped for some good plastic fenders and a lighter rack. The seatpost will likely be aluminum, which should shave a bit, and hopefully I will find something light to swap off as handlebars.
Rant over, thank you for reading! Very excited, updates will come.