Listen to me: YOU. ARE.
LUCKY. (duh, that's your name)
-You don't have to worry about you and your friends not liking the same groups.
-You don't have to worry about one of you getting cut and one of you getting invited back.
-You won't have to fake your feelings in front of your friends - you can vent to them if you want.
-You can borrow clothes from them big time because they don't have to worry about what they're wearing in rush.
Don't try to hang out with a group of girls who you're unsure of. It'll just make you look desperate and that's the LAST thing the sororities want in a member.
You're going to have people talking to you from the minute you walk in. No one in a sorority is going to care if you come in by yourself. (In fact, they might be relieved. It sucks when a girl who you really want to join comes walking in attached at the hip to a girl you don't like.)