I'll be barely 28 in 1L. I didn't even know I wanted to go to UG, nevermind LS, until I was 22. I believe the average age at most schools for 1L is 22-25, so you won't be too young. I don't think age matters at all. If you're a mature 22 year old, you'll be fine. If you're an irresponsible 60 year old, you'll be in some trouble. I personally would take a couple of years to work and party, but I definitely understand that some people like to go,go,go, and that's cool too.