I think it depends on what your scores are. If they are excellent, then I wouldn't worry....if they are more mediocre, then the best time to have applied was late October/early November. My GPA was great, but my LSAT score wasn't too hot, so I was finished with my applications by mid-November. However, there are application deadlines for a reason, so as long as you apply within the deadline, you're not hurt too badly - though you may be informed later than others since yours came in later.