^ Don't count on it not being crowded. BGW can get very crowded that close to Halloween. I went two years ago and they were turning cars away at the parking lot entrance!
Strategy:
Get there before opening and hot-foot back to DarKastle then Alphengeist
Then Big Bad Wolf
After that, you can pretty much enjoy the park at your own pace. Be sure to grab some night rides on Apollo. The line usually dies down pretty good during the last hour of operation.