I hate to be the bubble burster among the sunshine blowing
but I wanted to add in a reality check.
Rush is mutual selection process. There is NO guarantee of a bid. Most people DO get a bid, but there are a good amount of people who do not get a bid, particularly to their first choice organization.
We don't know what school you'll be going through rush at. That'll make a big difference, if it's a competitive rush it's going to be harder for you to get a bid.
I'm also guessing on most rush registration forms it'll ask for your age, and I don't know that hiding it is a good idea.
While I hope you enjoy yourself and find a home, I just wanted to point out that there's no guarantee that you'll get a bid. So saying things like "my future sisters" and other comments that assume that you'll get a bid to a group are premature.
Good luck!