It depends if you want to make some threads before you open up the groups do that.
I would just start out with a few threads though so that the group can evolve over time.
If you want to open up the group this afternoon, it will be slow during the day, but I will post there.
You know we could put the picture up now, then add the pokes later.
We could even change things from time to time, like put a jack o lantern out for halloween and snow for winter etc.