Well, you have plenty of time to prepare so I wouldn't worry about the individual events. I'd recommend joing a sports team (or several) and keep up a physically active lifestyle. I would start training specifically for the CFA during your junior year of high school, but you can always start earlier to see which events you need to work harder for.
Get good grades in High School first, and shoot for the highest on SATs. You still have plenty of time to train for this. Schoolwork should be the highest priority now
