Hey Edwin - thanks for the questions. Others may weigh in on this as well, but I wanted to give my thoughts in the meantime. I suppose the first thing I should say is that it's almost always advisable to not take the LSAT until you're consistently scoring at a level with which you're satisfied. So if that means waiting until February (or later) to take it, then generally that's the way to go.
Of course, as with most generalizations, there are exceptions. In this case the exceptions are almost all school-specific: how do the schools to which you're considering applying treat February's test? Every school is a little different--some schools don't accept it for that calendar year, some accept it but penalize you in their rolling admissions process, and some accept it without penalty--so your best bet is to contact schools individually and ask.
I say that leads to potential exceptions to the wait-til-you're-ready rule, since it might be preferable to you to apply in December with a slightly lower score than you'd prefer, as opposed to waiting an entire extra year if that school doesn't accept the Feb LSAT. But, again, it hinges on the school in question and their policies.
Finally, check out this blog post about the Feb test and various schools' treatment of it:
http://blog.powerscore.com/lsat/bid/153 ... SAT-scores
That should give you a better idea of what you're up against, but as always contacting individual schools directly is the most sure-fire path to the answers you're looking for.
Thanks!
Jon Denning
PowerScore Test Preparation
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https://twitter.com/jonmdenning
My LSAT Articles:
http://blog.powerscore.com/lsat/author/jon-denning