Congratulations! Best of luck at Columbia!
Considering your current experience with the college application process, what sort of chance do you think I fair at the Ivy League Institutions? Here is my chance thread: http://talk.collegeconfidential.com/what-my-chances/1779000-princeton-class-of-2020-ea-chances.html#latest
Please read through it all, as I have increased my test scores from the original date of the post.