Just a quick reply from my phone:
pathassist.org/ has a lot of information to look over that talks about the job description, certain requirements, as well as all of the accredited programs.
Most of the programs are on the east coast, a couple towards the mid west, and one in canada. The closest for you would be drexel in philadelphia, a good school but you definitely pay for it, especially out of state. Maryland has a pretty low out of state tuition.
As far as your chances, the gpa will hurt you a little. Your GRE may make up for it (i took the new one so the scoring system is different and I'm not sure how it compares). Experience working in a laboratory setting will be useful. I definitely suggest finding someone to shadow to see if it's a career you'd enjoy and show future schools that youre serious. Also, apply EARLY.
Good luck, whatever you decide!