This is unlikely. Unless OP goes to a well known school, known for it’s academic rigor, all this info tells an AO is that they are likely able to do the work. BS are filled with kids who took all honors classes and got a 100 on everything only to enter BS and be an 85 average student. OP, if your family can afford it, I would talk to AO’s about repeating only because these schools are set up to be a 4 year process. Entering at 9th grade gives you the full experience and allows you a year to get your footing. (Unless you are coming from a JBS - different story and you should rely on your JBS placement counselor). Additionally if you are a year younger know that many kids will be 2-2.5 years older than you. You’d be shocked at the number of re-classed kids at many top notch schools. Many do it for sports (which for boys makes even more sense) or to ensure a smooth academic transition. If you are a boy, 3 years younger than your class and want to play a varsity sport, that age difference makes it less likely.
This is totally incorrect. I am sorry to come across so strongly but I think perhaps other kids need to read these threads and be realistic.
The GPA and honor roll simply tic off “can do the work” - this isn’t something that puts kids above other applicants.
Black Belt - says disciplined and committed, good character attributes, but nothing that will help the school shine
Lacrosse - you don’t mention if you are good enough to be a varsity level impact player your first year. If you are this is your biggest win yet on your application.
French Horn and theatre - you are well rounded! This is great. Do any of these schools need a French horn player or are they already 4 deep in that instrument and therefore will give that spot to a cello player because they will have no cello next year.
OP - You ARE a great candidate! But that means you have a 15% chance at some of these schools - maybe a little more because there are always kids who apply “just to see”. I’m assuming you are thinking that St Georges is your “safety?” I don’t know it well enough to comment on that but with an admit rate between 17 and 25% that isn’t really a safety… Again, you are a good candidate, even more so if you are a full pay kid, but I want other people to read this and not think that this profile is a sure thing to schools that you have listed.
I also agree that for you flushing out your personality in essays and interviews will be important. You want to jump out to an AO as someone who will be a great fit for their school. You want them to be able to picture you in the orchestra or on the lacrosse field. Research the schools and figure out why you would be a great member of the community and make sure to get that across! Good luck.
ETA: OP, excellent job creating a clear picture of your ECs versus putting everything you have ever done in an effort to look impressive. When I read your list it is totally believable. Don’t fall into the trap of trying to pad it to seem more impressive - it’s good right now.