Chances at Stonybrook University?

Interested major: Computer science
Residence: New York

GPA: 3.3/4.0
SAT: 1340/1600 (I took another one this October and am hoping for 1400, tell me how much more of from 1340 would I need to improve chance)
Honors: National honor society and national English honor society.

Activities: FBLA(business club), Volleyball and track (only in 9th), Chess club (I am the founder and president), volunteer at a summer camp.

I am only putting the grades relevant to my major interest as SBU site said they will look at these when I apply for CS. All my classes have been AP’s or advanced classes, except Spanish.

Computer essentials: 92
Web design: 99
Physics: 91
AP Calc: (taking this year, so far avg is about 97, I expect 95-97 avg this semester)

If there is anything else that you need to know for analysis please say so. Thank you!