How should I improve my chances?

I am currently a sophomore and my gpa will be a 2.96 by the end the year. My SAT score is a 1490. I have took one ap so far and I plan on taking 5 aps next year. My activities include: Model Un(1year), TSA(1 year), GCKA(culture group 3 years), Church Youth Group(2years), CTC(volunteer group 1year), and I play soccer in a league. I know I can get my gpa to a 3.2(unweighted) by the end of junior year. I was wondering if I needed my extracurriculars and if doing Key Club for the next 2 years would be helpful. Also any tips for improving my overall application.