WVUGirl, I graduated from WVU in May 07 and still talk to several sisters from my chapter who are actives, so I like to think I'm still semi-informed on our Greek life.

Don't worry too much about your sophomore status. As I'm sure you found out in the fall, plenty of sophomores go through rush and receive bids. COB in the spring is a little different because if you do get a bid, you'll likely only be around for 2 1/2 years instead of 3. Nevertheless, my chapter and many other chapters have still extended bids to sophomores in the spring. You have a great GPA and other extracurriculars which is definitely a plus! Think of it this way- in the fall, freshmen rushing are using their high school GPA. In the spring, freshmen use their college GPA. Many freshmen have a difficult first semester and their grades reflect it. You'll have a one-up on them in that aspect.
I saw go for it, several chapters at WVU are not at total and should be participating in spring COB. And definitely have your friends in sororities you're interested in introduce you to more girls in their house. Maybe you all can go out to dinner together so it's something casual, and don't dominate the conversation with talk about rush so you aren't coming on too strong.
Feel free to PM me with any questions you may have that you don't want to ask on the board.