Assuming A grades, advanced college courses may help some. But you should not assume that a super-selective college is anything other than a reach. You also need to talk to your parents about what they will contribute, and you and they need to run the net price calculators on the college web sites.
Some suggestions on course selection:
A. You may want to include for college sophomore level math courses differential equations and discrete math before taking more advanced college math courses.
B. You may want to have some other course besides real analysis as your first proof-oriented math course. Real analysis is often considered one of the more difficult proof-oriented math courses, so something else (e.g. proof-oriented upper level linear algebra, abstract algebra) may be a better choice as your first proof-oriented math course.
C. If you want to go on to PhD study in math, a reading knowledge of French, German, or Russian is often a requirement (for reading math articles and research papers written in those languages). So if you are choosing between foreign languages in high school, or can take an additional foreign language as an academic elective beyond whatever one that you have already been taking to reach a high level, that may be a consideration.
D. Be sure that you have a reasonable high school base curriculum outside of your math courses. See http://talk.collegeconfidential.com/high-school-life/2055289-faq-high-school-college-prep-base-curriculum.html .