It's peak Fright Fest season at that point, so yea, crowds will suck hardcore. Going on Friday may marginally help, but that hasn't always been the case in recent years. If you're cool with just doing El Toro, Nitro, and Kingda Ka, that should be achievable, but plan for lines. Like, stretching-out-of-the-queue-and-wrapped-around-the-side-of-the-coaster lines.
DFTBA: Don't Forget to be Awesome.#1: Skyrush