Work/Activities Question

Hello,

I was wondering if my work/activities are enough or about similar to you guys.

Habitat for humanity - 10 hours
Raleigh Rescue Mission (Homeless shelter) - 86 hours (6 months)
Duke Raleigh Hospital (Same day Surgery) - 100 hours (5 months)
Office Administrative Assistant - 130 hours (8 months)
Research Associate - 68 hours (4 months)
Test Reader (graded standardized tests ex. SATs, APs, etc) - 120 hours (1 month)
QA Analyst (worked as an agent for an international company - part time) - 80 hours (4 months)

This all comes out to be around - 594 hours total.

This is what I plan to put on my application. I might start working as a full time EMT, starting this May (after I take my MCAT). That would be the only thing I would add to my current list.

I am planning on submitting my application in the first week of August. I would appreciate all your suggestions and comments.