Chance me for University of Illinois at Urbana-Champaign (Indian Student)

Class 12 Indian student living in UAE

Grades:
Class 9 CGPA : 9.8
Class 10 CGPA : 10
Class 11 percentage ; 80% (How do I convert to GPA? Should I convert to GPA?)
Class 12 : Internal exams next week - I won’t do so great (but I heard UIUC doesn’t need internal marks/). I’m confident of doing well in final exams next year though.

Tests:
SAT: 1320/1600. I know it’s low. But I’ll be writing again in October and hopefully it will raise.
SAT Subject Tests: Chemistry: 800, Maths II : 730

2 really good letters of recommendation although I’m not sure if UIUC accepts them.

EC:
Not all that great.Won a lot of quizzes both in school and nationally. Founder of a quiz club in our school.
Member of Operation Smile club in school for a year.
Was an active member on 7cups.com - an online service where you help other people emotionally (Should I mention this?)
Tutored my younger sibling.
Active writer on www.quora.com (Should I mention this too?)
Participated in class and school plays. Won a prize.
Plays chess a lot. (Does that count? How do I write about it?)

Honors:
Received a lot of awards for getting a perfect CGPA in class 10.
High Distinction in Maths, English and Science in IBT (International Benchmark Tests)
83.5% in DELF (Diplôme d’études en langue française) exam - A2 level.

Is it a good idea to apply to UIUC? What other universities fit my profile?