From one student to another, I would say sell it. Doing well in school is top priority and if you dont want to write anymore for it then your site is at the peak of its success. So sell it now, concentrate on school, and then find a topic that you enjoy writing on and capitalize on it.
Exactly. You seem pretty set on the fact that you're done with writing and you don't feel like managing it when you're in school - sell it, cash out and move on!
What i would do is keep concentrating on school, hire a content writer or blog writer and let him post content on you website every 2 or 3 days and eventually in the summer or when you have time promote it heavily until you get decent traffic, and then sell it as you will get quite a lot of money because it will be a astablished site by then If you do sell now and only get 500 uniques per month you wont get lot of money for it, but if you do what i said and then sell it it will sell for much more, because i have some friends who have been in same situation and had arranged some blog writers for few months and then sold it for more than $1000.
Just sell it if you don't care about it. (how much btw? ) You can always start another blog... it's not like you poured your life into that one month, right?
There is no such thing as "finishing" a blog... blog's are only valuable when they have consistent traffic. The traffic will begin to dwindle if the site is stagnant.