Coffeemug, I would like to say which college this is but I would end up getting vulgar e-mails from a certain listmember, I'm sure. But it's a Southern college so I primarily contacted the classic Southern sororities--and those who really support a new chapter if they choose to colonize there (some, I recall from my days as a Greek advisor at a university, basically abandon their struggling chapters).
Also, alum support here would definitely be strongest from the classic Southern sororities--sometimes it seems that everyone here is a member of 1 of 5 groups! Also, I don't know yet whether each group would go national or the groups would just disband and the nationals would conduct rush. Probably the latter would be preferable.