4 time zones would be enough for now... then from there just 4 people who will do the meetings at their time zones... I would help out, but I tend to on very late at time.
I say start off with the 4 time zones and from there if you and the 4 people feel that there should be more expand from there... but the hard part would be that the DON have to get all the 411 from more people, and along the lines there will be a miss communication.
So pick well on who should be the 4 for now.
