Nice! I'm a wrestler too! Good that you're starting early. First off, academics will be your most important. I know you're asking about ECs but this should be helpful. Take a great load of weighted courses next year, but you need to be able to handle it, to boost your GPA and class rank early. Second, sports. Keep on trucking with wrestling. Your goal should be to letter and then later in high school become a Captain. You don't need to be the best athlete to be a Captain, prove that you're a leader and committed and work to become a Captain in at least one sport. Next, cross country. I did this too. Very laid back compared to wrestling. I'd fully recommend. If you can, do XC in the fall and track in the spring. This will just get you more letters, keep you in better shape, and more chances at earning leadership opportunities. Also will teach you time management being a triathlete and taking a harder workload later in high school. Next, clubs. Most people say don't join a ton, it looks bad. I say no. What I did was I joined a ton of clubs, a ton. But I didn't stay as a member. I pursued leadership in each and every one. Join clubs but always, always try and become an Officer in them. The clubs you are in at the moment are good. Keep going for leadership in them. The big ones you want to be a leader in are Beta, National Honor Society, and Student Body/Counsel/Class. Don't be afraid to apply for positions. People always shy away. As a sophomore at a big school, I said screw it and applied for VP of the student body, I got it for my Junior year, then that led to becoming President this year as a senior. You won't know if you don't apply. I did the same with Beta and the odds were kind of against me with the election, but I ended up swaying enough votes to get Pres of that too. Apply for every opportunity that is available. Never, ever get discouraged. Greatest lesson I've learned. The only other thing I'd say to look into doing is joining JROTC if it's available. If it's not, look for local Civil Air Patrol units or even join the Scouts or something. Always load your application and take advantage of opportunities. Stay active with this forum and don't be afraid to ask questions. Probably more information than you bargained for but hopefully it helps.
PS: Jobs, internships, and volunteering during your summers are a great bonus. Also study the Whole Candidate System (WCS) West Point uses and use the Class Profiles as a checklist!