Current student offering application advice

<p>im currently a junior and my gpa is really weak right now its a little bit better than yours 3.6 with the strongest courseload possible at my school (multiple aps don’t know ap test scores yet) . i took the SATs in october and got a 2110 and plan on taking it again hopefully 2250+. im going to have at least 3-5 leadership positions ranging from newspaper to student council and politics to community service. that i actually put a lot of time in in addition to playing a varsity sport, being really involved in art (national art honor society), and piano (placed in an international competition).
i kind of slacked off freshman and sophomore year as well. what im trying to say is that if i get a really high sat score, will it sort of “substitute”/ “make up for” my weak gpa? do i stand any chance at all? teacher and counselour recs will be really impressive. and i also have 8 undergrad credits from harvard</p>