Replying to Help me pick a topic for my research essay! (Skiing/Sports related)

Hey NS, I have a research paper due in a few weeks and im hoping to get some input to help me decide. Im hoping to keep this paper on a topic relatable to skiing/action sports so I'll actually be interested in the subject I write about. This shit needs to be 7 pages long and have 5 academic sources quoted to support my claim. So far the ideas I've came up with are:

-Injuries & Action Sports
-Professional Athletes coming out (Inspired by Gus on this one)
-Action sport culture vs Mainstream sport culture
-The freestyle skiing movement: moving away from rules & regulations
-The action sport movement in general (How they began and have gotten so much interest in the last decade or two)

These are all topics I feel like I could write about but I just don't know if I could squeeze 7 pages out of them. The other difficulty is finding any academic sources on these topics. Any help or suggestions would be greatly greatly appreciated!