You might want to choose something a little more specific like say choose an athlete like tanner or jon. As long as you can find history on whoever you choose it would be easier. Or you could even choose your local mountain and do its history. Or you could do some general stuff like say a couple slides for history, couple slides for different aspects (park, superpipe, bc, urban), couple of slides for locations (different mountains), couple of slides for big pros. I had to do something like this like 5 years ago and I remember it wasnt really judged on content more your actuall presentation but it would be nice to educate some people.