Chances about getting into Johns Hopkins?

I am going to be a senior in high school this coming fall. I have a weighted 3.95 GPA and have taken AP and Honors classes. I am in National Honors Society and Music Honors Society. I have done a lot of volunteer work at the local library and an animal shelter. I have been in marching band all 4 years of high school (this year being my fourth), as well as jazz band all four years (again, this year the fourth). My ACT composite is 31. I am also vice president of a club in my school. I play three instruments. What are my chances at getting into Johns Hopkins? Thanks!