I would also think that being a Wednesday, you'll probably be okay in most cases. I would grab a FP for either RSR or GotG (depending on whether they still have them and the return times). If they have them, grab a WoC FP as well (they've been lasting pretty long into the day of late).
You'll be there during HalloweenTime, so GotG has two different version of the attraction. During the day, it's the "normal" version, but after dark it switches to "Monsters After Dark". If you wanted to ride both, I would ride GotG soon after you arrive (either using FP or standby) and then pull a FP for the nighttime version. The switch happens between 6:00 pm and 7:00 pm (the "normal" version closes at 6:00 pm - my guess is that is when the close the queue and begin the switch over process - and Monsters starts at 7:00 pm).