Should i start World of Warcraft again?

I used to play till some months ago,but a friend recently brought a gamecard as gift However, this summer (till August) and the whole next winter are going to be too immense studying-wise, because it is my last year till college, and my goal is Army Law School, which here, is pretty much a school for only the best :-/ . But i kind of miss World of Warcraft days, but as i said.... awww give me your opinions please.