Regarding Neighborhood watch meeting, I need some opinions ( I hope I came to the right place)

The Rotary Club has been in touch with Neighborhood watch people and the NW head person is out on vacation, however here is what I have. We can have a meeting Tuesday September 30. Should I push for sooner? We chose that date because it is a regular Rotary night and RMA building was available. Should I take any night sooner? How many people would you guess will attend? Should I approach the club to use the big room for this? Thanks for the help