Chances of getting into selective liberal arts colleges?

<p>I just finished my junior year of high school, so I'm starting to narrow down my list of colleges and work on essays. I was curious about what my chances of getting accepted at selective liberal arts schools are. Some of my top schools are Amherst, Williams, Bowdoin, Vassar, and Haverford. I am also interested in a few Ivy's. I really really like UPenn. </p>

<p>Unweighted GPA: 4.0
Weighted GPA: 4.91
Unweighted Class Rank: #1
Weighted Class Rank: #24 (class of over 700)</p>

<p>ACT Composite: 31
English: 35
Math: 28
Reading: 32
Science: 30</p>

<p>I will take it once more in the fall and I'm hoping I can raise my score to a 32 or 33.</p>

<p>I have taken all honors courses since freshman year, with the exception of gym, choir, drama, and freshman Spanish.
I have completed AP US History, AP US Gov, AP Comparative Gov, and AP English Lang.</p>

<p>Senior year I'm taking AP Spanish, AP Micro Econ, AP Macro Econ, AP Calc, AP Enviro (with honors classes in other areas)</p>

<p>Extra Curriculars:
Choir since freshman year (Choir at my school is very competitive, there is a very difficult audition process)
City-wide choir since sophomore year (also difficult to get into)
Voice lessons grades 8-10. Too busy this year, but I plan to start again senior year.
Volunteering teaching ESL since freshman year (with a hiatus first semester of junior year when i got too busy)
Second Place in State Debate Tournament this year
Science program at a prestigious liberal arts school the summer after sophomore year
Gay-Straight Alliance sophomore year
Math Club since junior year
Ultimate Frisbee since junior year
I'm doing a science internship this summer</p>

<p>I'm worried that my extracurriculars aren't strong enough. I do anticipate getting very strong letters of rec though, and writing incredible essays. What are my chances at getting into highly selective colleges?</p>