How are you sure that your club will be a colony in just a matter of a few weeks?
I only ask this because my own chapter's colonization process took many years and alumnae support in order to even come on campus. I'm thinking many NPCs follow similar processes.
If it is NPC organizations you wish to affiliate with, I don't think coming on a message board asking for OUR opinions is the best thing to do. Many sororities are represented here on GC, so it'd be natural for us to say ours is the best.
Visit
www.npcwomen.org to learn more about the NPC, if you haven't done so already.