Chances? (High Scores, Low Grades)

What do you suspect are my chances for JHU?

SAT- 2320 in a single setting (750 Reading, 790 Math, 780 Writing)(2350 Super scored)
SAT II- 760-Bio E, 730 Bio M, 770- Math 2, 750- U.S History
ACT- 35 Composite (36 English, 35 Math, 34 Reading, 36 Science, 11 Writing)
AP- 5’s- US History, Language and Composition, World History
4’s- Biology, Calc AB
3’s- Calc BC
PSAT- 221 (National Merit Semi Finalist)

GPA (3.4 Unweighted, 4.0 weighted) Low I know ;( (This is what truly worries me about my application)
There was an illness in my immediate family which I used to explain my grades dropping sophomore/junior year, but I don’t know if that is sufficient.

I have also taken several courses through Cornell University Summer College obtaining a College transcript GPA of 4.0

I take a very competitive schedule, especially compared to my local peers, with my current year line up including AP Stat, AP Literature, AP Spanish, AP Psych, AP Govt. and Politics, and AP Chem

Extra Curriculars

Supervising Coordinator for Volunteer Program at Neo-Natal Intensive Care Unit (Methodist Hospital) (~1000 hours)
Job Shadowing at University of Nebraska Medical Center
Native American Reservation Work
Quizbowl Varsity Team Captain
Cornell Summer College
Team Captain for Varsity Debate Team (placed 6th in state at Public Forum)
Policy Debate and British Parliamentary debate (Cornell)
National Honor Society
State Track (Discus, No medal)
Nebraska Boys State (2014 Speaker of House)
Various Internships (Loyd’s of London local branch here)
National Merit Semi Finalist
Student Ambassador Republican Party of Nebraska

I come from a relatively small town in Nebraska, and I’m just trying to make myself stand out. It may be worth mentioning I can pay for my college in full, no need for scholarships (although they are nice).

Many thanks for the help guys!

Looks good. Hopefully, your extracurriculars and test scores will compensate for your GPA.