Open Question: According to my lifestyle, will i go over the 250gb limit from COMCAST?

I am a college student. I play online computer games, I stream movies a descent amount of the time(HULU, Youtube, etc) and I stream music. I do not download too many movies but occasionally do(hd 720p). All these things plus everyday internet usage seems like alot of downloading. I know its hard to say but I was wondering if anyone else lives like this and has ever gotten close? I know 250gb is alot of space but if you add in the streaming of movies, that number can seem pretty small.