"With that said, if you have any positive suggestions outside of the 'suck it up GM, that's how the Pathfinder Organized Play Society rolls' attitude, please feel free to share accordingly. I'd like to hear how others handle power gamers, so I can add to my learning experiences and provide an even greater roleplaying experience at the table."
People are going to power game..
People are going to have normal characters.
People are going to have characters so inept you have NO idea how they survive to the end of the scenario.
The only thing you can do is spend your 4 hours GMing to tell the best possible story you can. That's your job as GM. It's not you VS them in a titanic death match to see who the last one standing is.
Just tell a good story.