Tips on getting into Penn as a transfer student

I am a high school senior currently and I was wondering if anybody can give me some tips on getting into Penn as a transfer student. I plan on applying as an incoming sophomore. Things like what college should I choose, extra-curriculars, essays, grades etc would be helpful.

See what notjoe and myself posted on your Harvard thread with the same question: http://talk.collegeconfidential.com/harvard-university/1769400-tips-on-getting-into-harvard-as-a-transfer-student.html#latest. Penn is going to be just as difficult for transfers as Harvard.