<p>i am a senior at ohio state and i did not start drinking until i turned 21 (sept of my junior year) i drink about at the same frequency as you although larger quantity (im 6’2’’ and 210lbs) and i can say i have had so much more fun this past year because of being involved in the whole drinking scene. my grades are better now then they ever have been. i would say youre fine. you will NOT get stupid from drinking alcohol like you are. some historic writers and academics have also been notorius drinkers.</p>