Sorority Issues

Earlier this summer I was seriously thinking about joining a sorority. I thought it would be a great way to meet people since I'm just going to be starting college and I just commute to school. The more I found out about it, the more I wanted to join. Just last week I was 110% sure that I would absolutely love being in a sorority, But now I'm starting to have second thoughts. College life seems like a big adjustment for me. I have a lot of stuff going on too (I took 18 credit hours, I just got my first job ever, and a new boyfriend.) Not to mention the amount of time that I will be spending in class, doing homework, and studying. School starts for me on Monday and we have to register for rush the first week of school so I have to make up my mind fast. There are so many positive sides to being in a sorority, but there is the issue of the time-commitment that it takes to be in one. I was thinking waiting until spring to rush, but I know that sororities will probably expect the freshman to be more involved on campus by then. However, I was planning on waiting to get involved to make sure that I could handle my classes. I would totally regret it if i decided to wait and didn't get a bid because I wasn't involved enough on campus. I know it gets harder to join the longer you wait. Can someone please give me some advice. I just don't want to join and then find out I made the wrong decision because that would be unfair to me and the sorority. Thanks...and sorry this post is so long.