Looks like your EC's are pretty standard. Your clinical experience may be above average with the EMT. Keep up the good work!
As for the questions, I can only comment on #2. If you can smell the patient, it's clinical according to LizzyM. It does not really matter what you do (most volunteers stock shelves or wipe beds, etc anyways)
I'd find a few more MDs to shadow as you said. Something that sticks out to me about your ECs is they all seem to be centered around clinical things/trying to get skills for medical school. That's a good thing of course, but is there anything else you are interested in? A sport, hobby, even volunteering for things that don't involve science/health but that you enjoy doing. I think something in that direction would make you feel less "standard" and allow your personality to shine through a bit more.