The first time I read youer post I thought it said you'd be dating her in September and for the next 4 years most likely and I thought "Wow, what a way to set yourself up for being whipped if I've ever seen one?" but then I re-read and realized you just meant seeing her and not dating her.
Anywaysm, back to the whole point, I think there are 2 things you need to know, and if you follow them you should be n the driver's seat from here on out:
1. You are drastically over-analyzing. I did the same when I was in high school and all it does is make you feel less confident, stir up drama, and make you question every move you make. Moves you make and things you say are who you are, if she likes you she'll like them, if you start doing things out of the ordinary she will see through it within a week (my girlfriend still brings up how I tried to be diffeent when we first started dating to impress her and laughs).
2. She likes you man, thats all that matters. Whether you take her to an expensive French restaurant or the park makes no difference to her (unless shes really materialistic and if thats the case then hurry up and get her clothes off because you need to break up with her after that). She likes being with you, and no matter what you come up with she'll enjoy. That being said I think it would be really nice to drive up to your future campus for a couple of hours, visit some stores, look around, have some nice dinner at some restaurant you plan on going to a lot next year, etc. It will give the both of you a lot to talk about, and that is usually the hardest thing to find the first couple of dates before you get "used to" being boyfriend and girlfriend.
Best of Luck man, -ZIG
Sean Tracey has my apologies, we all know Ozzie Guillen is an idiot. I'm rooting for you!