As someone else mentioned, OP is probably only interested in having sorority characters to "sex up" the plot. And is the priest going to get involved with one of the girls ("Thorn Birds")?
I would never portray a Catholic Priest in a scandalous light.
I would never portray a Catholic Priest in a scandalous light.
Okay, what about sorority women?
Like the others have said, I don't see any need for your characters to be Greek, and your ideas thus far seem like they have been "done" and "redone." Try to think up something with a new angle.