And on that note, only you know (maybe) how hard you will have to study. Don't let others that claimed they "never really had to study" in API lure you down that path. I listened to too many of my friends (that probably weren't being completely honest) say that and it almost bit me in the ass. Go ahead and study in A-pool if it will give you peace of mind. Those that studied too much regret it far less than those that studied too little. The stakes are high and you should treat it as such. That being said it's nothing to be worried about ahead of time, just have your game face on when it counts.