stargirl725,
When I went to VSU the dorm thing worked out great. First, rush is held the week before classes start. If you are assigned to live in that dorm after rush then you can move into your room and live there during rush. If not then you are there just for rush and you move out after rush.
It is usually a very smooth process. Mens rush is the week after usually, or at least when I went there. But they dont have any dorm requirements during rush.
Hope this helps!!