I'm also taking the December test...not an ideal situation, but I'd feel better about prepping properly over the next 2 months and getting a good LSAT score rather than risking something mediocre or worse. Unlike the OP, by GPA isn't so hot...so I need to make up for it with a good LSAT and a strong application in general. As long as you have everything else ready by early January when the results come out, you should be fine..