Your best bets for figuring out the cost as far as dues and such would be to talk to the other chapters on campus. Dues vary nationally but are usually fairly similar for chapters on the same campus.
Timewise if you vote on this and PHC agrees you will get stuff from NPC members rather quickly. You choose three to come and present. That may take until the fall depending on how quickly the rest of this moves. THey present, you choose and they will colonize fairly quickly from there.
It would also be worth contacting someone from the
NPC because even though you haven't voted yet they can give you better info on the process.