The work you are doing is very Public Health oriented so I would encourage you to apply to the MPH program. I am an Americorps member as well, I had a undergrad GPA of 2.98 and my GRE scores we pretty low, math at the 50th percent and Verbal below 50; but I've managed to get into 3 schools! Your GPA will make up for your GRE scores, public health schools are not very strict about GRE scores.
As for the stats class, I wouldn't know how horrible it is; but with any MPH program, you are required to take stats.