I'v found from all the Halloween Party's I'v had that its best to have them around the 24-25th. Sometimes Halloween might work if you can cooridnate a few adults to take the little one's out for a while.

I always send out invites about a month before the date. Usally people don't have plans by then, so this might give them something. (ya all know how they panic.)

It's as simple as that. Keep us updated. :-)