Glad to hear things are going well.
If you're going to send nationals a list of interested women, I would advise you not to include women who are already in sororities or who are graduate students. Once you've been initiated into an NPC sorority, you can never join another; and grad students can't be collegians.
However, it isn't wrong to keep in touch with these women, as they may have friends who are eligible and interested.
Good luck.