Is Affirmative Action a good topic for me to argue/present in my AP English cl?

Later in the year, everyone has to choose a debatable topic, and study it. Then we have to do a presentation, and our teacher will try and oppose/ go against our beliefs, and he will grade us on how well we defend our views, and whatever. (I'm against AA by the way) We will have to debate with him. I really want to do affirmative action but will that be an easy topic ? Like what would I say when he says, "what about diversity? " and whatnot. Thanks guys! Do you think I should choose a different topic ?