What are my chances of getting into these boarding high schools?

<p>Hi. I am going into 7th grade (as in 7th grade starts tomorrow.) I really like Choate Rosemary Hall the most, and I also like Concord Academy and I have looked at and semi-liked Taft and Middlesex.
I have great grades. Maybe not perfect, but in 6th grade I got two B+s, in Science and French, but this year I am 99% sure I will get those AT LEAST up to an A-. I have an A- in Math, and for the rest of my subjects (English, Social Studies, Chorus, and Health.) I also take Video Production, in which I have a A. I have taken Chorus for 5th and 6th grade, but honestly, I'm not a singer, so I'm not taking it this year.
I have not taken really any extra curriculars this past year (besides Video P.), but for 7th grade, I plan, and will really add on quite a bit. I'm going to be in Student Association, and the Writing Club which switches off with Literary Magazine. I am also doing LOTS of community service, totaling up to about 100 hours or more by the end of 7th grade. These are running 2 bake sales for Children's Hunger, one book drive for Read to Grow, volunteering at a school that my step mother works at (helping the community, helping the school, baking pies at thanksgiving... that kind of thing.) I am also doing an hour a week of helping kids with Autism. I am also (hopefully) going to volunteer at a Soup Kitchen once of twice a month with a friend to feed over 150 people.
I am an avid writer and reader. I enjoy graphic design, photography, collecting Harry Potter things, hanging out with friends, and school.
I think this is about it.....
So, what are my chances?
And if you think there is a school in the New England area (Mass., Conn., NY, MAYBE VT and NH), feel free to suggest it. :)
Oh, and I also do rock climbing...</p>