Well so far there are four of us,
I could see if I can russle up some more players from the office and then we can maybe plan a debut game for next weekend as this weekend may be a bit short notice for the others.
As you say around 8-10 would be perfect.
I would suggest one of the many parks in Zürich, I'm not too familliar with all the names though.... There is that nice big one that starts just off of the main bridge in Zürich (on the Horgan thalwil side of the lake if that makes sense)