Tarmac, wow, very high starting score : )
My best advice, if you can afford it, is find a tutor who scored extremely high. Do a few hours, to get the right idea... it will save you a lot of time in the long run.
My advice, stick to OG. Write 2-3 practice tests a week, do about 50-100 questions a day, and make sure you attack your weaknesses. Do that consistently, and you'll make rapid gains.
The #1 factor as to how you do is the dedication/effort you put in. That's it.
Best of luck.