What are my chances at at UMich, Rochester, Emory, BU, Brown, Pitt, Johns Hopkins, and Vanderbilt?

I’m a junior in high school.

ACT composite:34

Sports: 5 years varsity tennis, captain 2 years (have taken tennis lessons for 10 years). Have played and won local and national tennis tournaments for 5yrs. Played in state championship for tennis. Play squash on a travel team

GPA:3.91 unweighted

Courses taken: Freshman yr-honors bio, honors spanish, honors algebra 2. Sophomore yr- AP world, AP physics B, honors precalc, honors spanish. Junior yr-AP english lang, APUSH, AP bio, AP calc bc, honors spanish. Senior yr (expected)-AP lit, AP stat, AP spanish, AP chem, AP Gov pol, AP psych, SUPA econ (syracuse university credits)

Awards: American Chemical Society award, NYSPHSAA scholar athlete award 3yrs in a row, named to all-city tennis team. Named to all-league and all-county tennis teams 3yrs in a row.

Extracurriculars and volunteering:
3 years precollege programs at Rochester
over 200hrs teaching tennis at local club for 3yrs
Over 100hrs interning/doing research at URMC and evaluating clinical trials
Shadowed physical therapists for over 60 hours
Coauthored 2 articles that were published in national medical journals
Member of welcoming committee, women’s awareness club, and Friends of Rachel

know my ECs are somewhat lacking and intend on trying to improve in this area. Any suggestions on how to improve my ECs/ what activities to partake in would be great. I intend on majoring in biology or neuroscience on a pre-med track.