OK, leaving date is approaching fast. Almost everything administrative is done, I picked up the Chinese visa today.
If someone of you plans to do something similar, here is a very short overview of the most important points;

• If you are male, make sure you get a leave from service duty, even if you are classified as not fit for service.
• Make sure you have a health insurance that is valid in your destination, some countries require a proof of this for their visa.
• Make sure your EC and credit card are enabled in your destination.
• Make sure there is a trusted person with authorization to your bank accounts in case you loose cards.
• If Swiss, go and sign out at your district.
• If Swiss, make sure you are up to date with taxes, you may not be allowed to leave before you did that.
• If Swiss, check with SVA if you have open positions and register as unemployed in Switzerland in the future.
• Get necessary vaccinations and malaria treatment if necessary.
• Check if your passport is valid long enough.
• Apply for visa well in advance, some take considerable amounts of time to get, but beware, some also have an "expiry" date.
• For some countries, you need to book flights/ train tickets /hotels in advance to get the visa.

I think that's about it, no claim of being complete.

Many thanks to the people of Rollladen in Zuerich, they hooked me up with spares, bushings, bearings, slide wheels and so on today!