If you truly want to go to law school i think you'd be foolish to wait a year. i applied to schools two years ago, then got stuck in the middle east. long story short, at that time i was only accepted to 3 of the 13 schools i applied. only one of those schools would even give me a deferment. fortunately the other two i actually wanted to attend threw me pity admits this year...but they waited until the end of march, 8 months after i re-applied to accept me. because of the wait, i put in safety school apps....u memphis waitlisted me, and my numbers had me in the guaranteed admit pool (46/47)from the 2001-2002 statistics.
realistically i would have never been admitted this year due to the increased competetition if i hadn't hounded the admissions offices all year long and had one hell of an excuse not to matriculate last year. it's up to you, but remember typically your lsat will only improve marginally when averaged....and 40,000 applicants didn't get into school this cycle.
finally don't think extra curriculars over the next year are going to make much difference...through my entire ordeal i finished a masters degree and 5 years of military service....none of the schools cared!