You should definitely rush in the Fall if you're looking for sisterhood and commitment to activities. There are 7 wonderful NPC groups here with those qualities, of which I'm sure you're already aware. Just in case you haven't heard, though, Fall Recruitment is going to be
BEFORE classes start in August this time (we're not sure of the dates yet, but I'll let you know), so make sure you're in Murfreesboro before classes begin.
And go to the Greek Life office to ask how soon you can sign up for rush, b/c there was a Sorority Interest meeting earlier this week, and I'm not sure but you might be able to sign up already. If not now, you can definitely sign up towards the end of this semester. Also, you have to have at least a 2.5gpa to even go through. You seem like a great girl though, so you probably have a good GPA.
Good luck with whatever you decided to do!
If you have any questions about MTSU formal recruitment, feel free to PM me. (Although
some q's I'm not allowed to answer- especially not this summer).