You have a great application on paper. You should get interviews. I hear some artifice/posturing in a lot of what you are mentioning - focus less on your perception of "top 20" schools or a superficial story/connection in your secondaries and especially in your interviews.
There is an art to coming across professional but relaxed, and being confident (not egotistical) in who you are. The more comfortable you are with yourself, the easier the conversations will be.
This is something a lot of "pre-med counseling" services fail with - they get wrapped up in the numbers game and anxious energies of their premeds, not realizing that most interviewers just want to interact with a nice person that they like and want to speak highly of. If you're interviewed, you've already passed the background check and are qualified (and you should). After that, it's just about personality.