What can I do better?

<p>I'm finishing up my Junior year, with what I predict to be a 3.3ish GPA, 3.8 W If I get straight A's by the time I'm a senior, I have the possibility to have a 3.5 UW. I'm taking all IB classes except for Jazz band right now. My ACT Score is a 26, and I haven't taken the SAT yet. I do plan on retaking the ACT until I get into the 30's.
I am currently planning on doing the full IB diploma program, with all of the test. (Physics HL, English HL, History HL, Math I haven't decided, Spanish SL, Music analysis SL) I am involved in all sorts of music EC's, FBLA, National Forensics League, and I plan on getting involved in MESA and NHS (If I can my senior year. I never knew when any of the meetings were and got chewed out for it.) I'm number 45 in a class of ~200.
In terms of less significant things, I also was a part of the People to People organization at one point, and won the science fair in like 4th grade or something. c:
But now here is the kicker. I am a Colorado student...who wants to go to NYU. HORRIBLY want to go to NYU. Or at least to a great college in New York. However, I feel even if I fix all of these things, I still won't have enough to get into this college, and get the scholarships I'm going to need to pay for it. I have my senior year left to do everything I possibly can to make it into this college. What on earth can I do? Please help me, I am so stressed out about this. It didn't hit me as hard as it did until I started researching colleges this semester, and I realized that all of my 3.1's in the past are now coming back to haunt me. :c</p>