Chances at UChicago, early action?

<p>I'm an international student and try to be awarded with financial aid..
I am planing to apply to the university of chicago on early action..
My SAT score is: critical reading 650, math 760, writing 690.
I have not taken any subject tests, because at early action uchicago does not require them.
I have A pretty good EC:
GPA 4.0
Rank 1st of 830 at my school
3rd place at national studying olympiad
winner of many contests, such as olympiad in bussiness, mathematical competition, etc.
honor diplomas for researches
graduated from musical school with honor diploma(play the piano)
graduated from the studio of national dances(dance pretty well)
volunteer job approximately 150 hours
have a really good recommendations from teachers and a counselor...
think will write down an impressive essay as a motivation(I'm always at top 30 students in my country, who are excellent in writing essays)
family income 5000$ per year
have old parents, both of them are pensioners
Please, estimate my chances, or advise me where to apply on an early decision to be awarded with full-ride financial aid.
Thank you in advance...</p>

<p>Guys, chance me, please…</p>

<p>Pretty good chance other than your rank is kind of inflated by your SAT score.</p>