Am I doing too much...and should I quit my current job?

I plan to apply to Pharmacy and I need your sincere inputs please. I also posted this thread in the pre-pharmacy forum to get their perspectives. Yes i am a nontraditional student, so please read the whole thing.

First of all, I started my extracurricular activities late so right now I'm trying to fill as many in as I can. But my friend warned me that they might backfire and hurt my application because the adcom might think that I am obviously doing everything just to get in. I have very good ec activities and they are mostly healthcare/pharmacy related. It's just that I bascially started all of them at the same time, between February and March. And I plan to apply this December. So as you can see, I only have around 9 months of ec activities by the time I apply and that's why I try to do as many as I can to make up for the short time period. Right now, I am involved in 5 activities. But I just found a couple good ones (one being a TA for a bio class) that I might be able to fit into my schedule. Should I do them as well?

Second, besides doing ec activities, going to school full time to complete my prereqs, I work part time at an university, which happens to be one of the schools I plan to apply to. I used to work full time there until I decided to go back to school. I have been debating whether it will be more beneficial for me to quit my current job to become a pharmacy tech because my job can be very demanding. But some people think that it'd be better for me to stay in my job because that allows me to have a relationship with the university and that might help with with the adcom. I heard it both ways, so I'd really like your inputs. Thanks.

By the way, I already got my first BS in engineering. Yes, I am one of those that decided to switch over after all. I am also doing very well in my prereqs right now.