Chances to get into Andover, Lawrenceville, Exeter, Milton*? Do I have a hook?

*listed in the order that I want to attend

NOTE: My interview is next week so please leave any tips/ways to prepare!!! Also, what kind of personality are boarding schools looking for?

Info:
Applying for 9th grade (2018-2019), boarding
I attend a public school, and I am applying to a local private school and a charter school. I got into the private school and charter school for middle school but decided not to go. I may apply for financial aid.

Grades:
Last year: all A+s
This year: All A+s except for two As
I skipped a grade in math, in honors english.

SSAT: overall=99%
RC-99%
Vocab-95%
Math-99%

Recommendations:
Math: I think it’s pretty good. I don’t have access to what she wrote, but she promised a strong letter and I participate regularly in her class discussions.
English: She said she will write a good letter, and she wished me luck on my admissions.
Counselor: I talk to her, and she sent me her letter.
Personal/special interests: music teacher

EC:
I play the viola, placed in a international competition this summer. First chair in an All Southern orchestra, multiple honor orchestras, in school orchestra. First chair in the local orchestra for two years
I play tennis, on a tennis team, won tournaments.

Won a photography contest
I’ve been a girl scout since first grade
Last year, I mentored other musicians
I am on the school’s math and science olympiad

Essays:
I am writing them now, I’m almost done with the Andover essays, and I’ve started the Lawrenceville essay.

(pm for more info)

Tip: schools are looking for YOUR personality. Just don’t be super shy or rude.
As for your hook, the only possible hook I can see is viola, if you’re world-class at it.

@babymalcolm I have beaten violinists, cellists, harpists, (other stringed instruments) etc in that international competition… does that count?

Schools want strong musicians for their chamber groups and orchestras. But if they think you might be TOO accomplished and might actually want to be a professional musician, they might wonder whether you might be better off at a specialized arts school (i.e. Interlochen, Idlewilde, Walnut Hill) or moving to a city with a pre-college conservatory program.