My gpa is around 3.5 unweighted.
I participated in National Math competition in 10th grade.
I did Internship in Daewoo business office during summers.
I also did volunteer work in hospitals for more than 2 years.
Id say you have a fairly good chance, if you write a kick-a$s essay that will help tons!!! If your essay is genuine and true to yourself it will take you SO far. Also make sure when you ask for a letter of recommendation that its coming from a teacher your trust will do write you something great. Good luck!
But I don't this isn't good enough to get into Abu Dhabi. I heard they're only accepting 100 students from around the world and that the ones accepted would be in the top 3-5% of students at the New York campus. So it's extremely competitive, from what I know. Probably won't get in unless you also expect to get into Princeton or Harvard.
You should be a match for the NYU main campus though.