[Firehouse]

If you ask them, your national office will come in and clean house and leave a solid core group behind. The old guys will be placed on alumni status and forbidden to return to the property. They'll bitch but they'll go and in the end they won't care.
Here's how to do it. 1) Go to the school with evidence of your sincerity; 2) go, travel, to your National office and tell them your story and ask for immediate help.
You CANNOT be successful rushing a good class as things stand because the bad guys will not allow it. They don't want to be shown up. The only way they get attention is from bad behavior.
I've done this kind of work for our National. Trust me. Listen to the advice you're getting from KTsnake. Make a move, let National ditch the bad guys, and free yourself to be successful. A chapter of eight good men who want the right things has a much, much better chance of getting a good pledge class than a large chapter poisoned by self-destructive losers.