I was going to ask/mention if there was a school housing issue but I figured you would bring it up if there was, which you did.
Here's a thread on how to run bump groups - to make sure the max # of PNMs get to talk to the max amount of sisters.
http://www.greekchat.com/gcforums/sh...ht=bump+groups
The best thing to do is to just think about what the other groups did when you all went through rush. For example, if they all had beautiful, emotional pref ceremonies and you didn't, that might be a problem. If things like that have gotten lost over the years, ask your alums for help. (You would be surprised at the things that stick in your head even 20 years out. LOL)
Hope this helps!!