Be careful that your new LSAT score is high enough to make a difference. It pays to read the multiple-LSAT policies of schools you are applying to. It is also a good idea to try and get some info from lawschoolnumbers regarding individuals who have applied to your target schools with multiple LSATs.
With my work/family I was in a position that a re-take would not result in much more than a 2-4 point difference... Where LSAC basically recognizes a +/- 3pt point difference on the test (margin of error, bad test day, etc...) a 4pt difference is not worth holding off applying.
I mean, as of today there are 5 top-14 school that are accepting apps... For me, I feel that being early is a much greater advantage. But hey, if you are going to kill it on the next LSAT by all means do so. Worst case scenario, you take it late and are better off waiting for next year's cycle.
I hope the best for you and good luck!