I just wanted to wish ufdale good luck with rush- it'll be a long, stressful, HOT week but in the end, its worth it. You've gotten some great advice from the women on here, make good sense of it and you'll be fine.
One quick note- last year we were given tote bags by PC to put our papers, flip flops, make-up, etc inside. We were allowed to carry purses inside, because the sorority women will offer to carry them for you while you are a guest in their house. I haven't heard any different and I don't see in any of the rush rules we've been given by PC where that's changed. It's a personal preference thing though, whatever makes you feel most comfortable.
Expect to see a variety of under/overdressed at UF, I was very surprised last year at the number of tanks and denimn minis I saw on the first day and just as surprised at the end of the week to see girls prancing around in full length beaded Scala gowns for prefs.