I think that is a great idea 33girl.
I also agree with FuzzieAlum when she said it is also good to establish chapters at not only big schools, but smaller schools as well.
In all honesty, I haven't even heard of some of the NPC sororities (big and small) until I started coming here to GC, and I have found that they are all excellent organizations that colligate women should all have the opportunity to become part of them.