I am curious as to how you arrived at this handicapped range. Harvard’s overall acceptance rate was 3.19%. This number includes all hooked candidates such as legacy, URM, Athletes, faculty kids etc. The actual rate for unhooked is probably 2%ish.
OP is an extremely accomplished student and has a lot to be proud of. That said she is applying as an over represented minority with a below median test score from a school that doesn’t routinely matriculate students to Harvard or other elites. Her application otherwise (while once again very praise worthy) is fairly typical of the vast majority of applications Harvard receives from an EC, transcript, LOR perspective. So why do you think her chances are 5-7.5Xs that of other applicants.
I am not dissuading OP from applying but I think it important she approach the process with eyes wide open to avoid future disappointment and properly calibrating her chances when creating a strategy. Sure take a shot, be proud and confident regardless but be thoughtful and plan would remain my advice.