Help! Should I choose Vandy ED2 or wait for RDs?

Dear all,

I am a Chinese, who lived in an English-speaking environment(international department) for two years.
I got TOEFL 115;
Redesigned SAT 1530;
GPA(weighted) 4.59;
SAT Subject Tests (math II & Physics) 770&750;
Junior year: AP micro econ 5; AP macro econ 5; AP Cal BC 5; AP Physics C Mechanics:5; AP Physics C E&M 5
Senior year: AP CS; AP Lang; AP World History; AP Stats: All pending
Activities: independent research (on health policy; big data)
voluntary work-“Future Classroom Project”- 4 yrs
guitar band player
gym assistan- got paid
Korean subtitle translator-> English
Honor: The first place in two extremely competitive Olympic-level math and physics competitions in China
(20 out of 50000)
I was rejected by Cornell University(my dream school) a few days ago and I am currently thinking about if I will go for Vandy ED2.
However, Vandy may not be my favorite, as I love Duke, Northwestern, Brown (my RDs) more.
My counselor, advisors and parents all want me to go for Vandy ED2 as they believe that I have a large chance to get in. I just feel hard to betray my heart, but I have to take the fierce competition within China into consideration.

What should I do?
An insurance choice?
Or an extremely risky one?
Help me out.
Thanks!

I don’t suggest doing ED for a school unless you like it more than all your other schools. Remember, you will have to spend 4 years of your life at this school.

Don’t do it if you have any doubts because you’ll regret what could’ve been at Brown, Northwestern, and Duke for the rest of your life…
Chance me: http://talk.collegeconfidential.com/what-my-chances/1946391-emory-emory-oxford-wake-forest-davidson-nyu-holy-cross-gw.html#latest