You already have some great schools to attend, so no need to feel stressed about top schools, unless their financial aid is needed. It is really impossible to “chance” anyone for top schools.
I am curious about your interest in anthropology. Did you explain this in essays? I see tat you liked it to environmental studies in essays and would be interested in the gist of what you wrote.
Taking care of a brother with autism was, to me, the most interesting item in your list. How much responsibility have you handled?
Good luck- but you are already fine!