300 kanji in 3 days

So I had the bright idea of signing up for a Japanese test when I first came to Japan. There are four levels, 4 being the easiest, 1 being the hardest. I decided to sign up for level 3, thinking that I could already pass 4, and with some studying could probably pass level 3 by December. Well, the test is on Sunday, and man am I regretting that decision. I'm barely through any of the material (not that I haven't been studying, but reviewing level 4 stuff took longer than I thought), and out of the 300 kanji (chinese characters) I need to know, I had still only learned about 100 by the beginning of this week. So, now I am attempting to learn the remaining 200 kanji in 3days. (I started yesterday). Doesn't help that I agreed to go bowling/drinking with some teachers from my school tonight and to an all day mochi (japanese rice cake) event tomorrow. Might have to pull an all nighter, ahh I feel like a college student again. Wish me luck!!