Your scores and course rigor look great, and props on the internships! The only concerning details would be GPA (although the upwards trend helps) and your lack of confidence in the essays. Here’s what I would say (sorry if it’s not incredibly accurate–I’m rather new to this):
Ivies, MIT, UChicago, Standford: high reach (for everyone)
CMU, Vandy, WUSTL, USC, William and Mary: high/mid reach
Northeastern, RPI, UVA: match/safety (RPI is probably looking for girls–it’s currently 70% male)
The main thing I would say is to work on your GPA and essays.
Chance me back? http://talk.collegeconfidential.com/what-my-chances/1771079-junior-violin-french-major.html#latest