junior

You're good. I had a few 21 year olds, transfer students, etc in my pledge class

I agree with WSU Greek ^^^ you definitely won't be wasting your time. Make sure your grades are at a good level and you stay open in your conversations with all sorority women while going through as well as keeping your mind open to each house to figure out where your personality fits best. There might be two houses that prefer mostly freshman but I know a lot of girls in every house that went through recruitment as a transfer and received bids during formal. If you end up not getting the house you want or for some reason formal doesn't work out there are informal events throughout the year (not all houses will do it but there's usually a good chunk) and you could do that as well. Go Cougs and go Greek!