I try to figure out if this post of yours is the 'be continued' about your latest post where you asked about earnings in cryptocurrencies, etc.
I agree with @apshamilton you have to ask yourself first why you want to start this all, run a business like this. Is it for your #help project?
Since you mention Switzerland...
Start a normal buisiness or Aid fund. If it comes to taxes you might have all kind of benefits.
Payments can always be done in BTC or any other cryptocurrency or... start with that later.
Good luck I hope someone will have the solution for you. At this stage I think you make it unnecessary complicated. If a whole business plan tumbles down because 2 people leave you are in a bad pisition too.