Before studying score does not matter. September-January is enough time to get any score you want basically. My personal advice that worked for me is to use Kaplan for hard sciences, Khan Academy for P/S, AAMC CARS for CARS, UWorld for all except CARS, AAMC section banks, and AAMC FLs. I did content review (kaplan+khan) first then did the rest together, spacing the AAMC FLs out once every 2 weeks. Do not waste a AAMC FL by using it as a diagnostic/before content review, they are short in supply.