Should I apply this July for 2017 or take a gap year

I need your help. I am a junior at one of the best state school. My GPA is 3.1 and my OAT score AA 310 and 300. I am planning to take OAT again. I am active committee member in optometry club and other clubs. I have worked in research company, did 50hrs volunteer work at children's hospital, 15hrs followed 2 optometrists.

I am planning to take OAT 2nd time in this July and I am thinking I will get 330 score.

My question is should I apply in July 2016 for next year or take a gap year and...

Should I apply this July for 2017 or take a gap year