Hi sarangua. First, let me congratulate you regarding your academic record. A lot of work goes into earning almost all A’s. In the context of a selective holistic-admissions school like Brown, that neither gives you any advantage nor disqualifies you because you don’t have a perfect record. What (Brown) Admissions will want to see is that the courses you took in the major academic areas (vs say a “fun” elective here and there) were the hardest ones offered at your school. That is typically spelled out by a form the guidance counselor submits.
EC’s and and in particular things related to leadership (whether school/academic-related or otherwise) are often where the sorting gets done. Having scrutinized the EC’s of the hundreds of Brown applicants I’ve interviewed, I can say that yours do not stand out. You’ve accomplished many good things, but it’s simply a very competitive school. Note that EC’s are “weighted” to some extent in terms of relevance to the intended concentration, so an award in Bio might be helpful to the chances of a prospective Bio concentrator, but less so or maybe not at all for Art.
What the above amounts to is that I concur with others that you shouldn’t use Brown for your ED. It’s somewhere between unlikely and very unlikely to work out. Admit rates usually do run higher for ED, but that’s because the applicant pool is that much more distinguished relative to RD.
In my opinion, the strongest aspect of your EC’s is a number of things showing leadership or leadership potential. I would recommend using that as a theme in your applications. Don’t exaggerate (ever), but make a case for how your academic and EC accomplishments speak to someone who is prepared to make good use of their educational opportunities.
FWIW, I gave similar “emphasize leadership” advice to a (white US) student attending a HS so bad it was facing disaccreditation. They ended up turning down Harvard in favor of Brown (though as they say in investment ads, “past performance does not indicate future results”).
FYI, at least when I attended Brown travel costs were part of the financial aid calculation. My family didn’t have any money beyond meeting basic living expenses, so each year ahead of Christmas and Summer the Bursar’s Office cut me a check for the approximate cost of a round-trip plane ticket.