If you haven’t done so, check out the Common Data Sets for schools that you are considering. Section C7 tells you how different academic and non-academic admissions factors are weighted by a school; Sections C9-C11 give objective information for recently matriculated students, which may in turn give you a crude estimate of how you compare with them for admissions purposes. For example, some schools give more weight to standardized test scores than GPA; some schools give more weight to GPA than standardized test scores; some give equal weight; and so forth, as reflected in Section C7.
You might want to have a conversation with your high school guidance counselor, who may be able to tell you about the track record for your high school of getting kids into the schools that you mention, and what your chances might be given that history.