<p>First of all, you can't apply EA to Gtown and Stanford if you apply to Columbia. Stanford is SCEA, meaning you cannot apply to any other school early if you apply, and Gtown is semi-restrictive EA, meaning you can apply to any other EA schools but no ED or SCEA school early. UChicago is fine, you can do that with a Columbia ED, and I strongly recommend it.</p>
<p>Next, how bad was your freshman year? If it's mostly B's, it won't kill you, however, if there's a C on there, that severely hurts your chances.
Try to get your SAT up 100 or so points as well, although the 2200 is fine.</p>
<p>Make sure you write a killer essay and a killer "Why Columbia?" short answer, it's a biggy for the school, although no one tells you that ahead of time.</p>
<p>You're a very strong applicant, and a great ED candidate. If you apply ED, you have as good of a chance as anyone (except legacies, URM's, and recruited athletes, of course). Columbia will love that you have the hardest schedule at your school.</p>
<p>All that said, you have a good chance, but with Columbia's plummeting acceptance rate, you never know.</p>