Chances of optometry school admission.?

I am hoping to apply for optometry this upcoming Fall semester, and thus, had some questions regarding this. I realize my g.p.a is on the lower end of the spectrum (3.07 cumulative, thus far, however, I have one more semester to increase it). Also, my freshman year I was going through a difficult time and thus my gpa suffered greatly, however, I have tried really hard to raise it above a 3 and even got so far as to get on dean's list twice, is this acceptable as an increasing trend in my grades, or would this not be good enough? Also, I am creating a pre-opt. group, and have joined other groups and have done some volunteer work in my years of college. Also, I will be taking biochemistry and some other advanced biology classes to strengthen my application. I was planning on taking the OAT next month, is there any real chance of me getting into optometry school or is my gpa going to set me back?