I am working on my first game as of a week ago or so, and for my first project I am working on a really nice 2D roguelike haunted house game. Very simple grid interface.
I expect it will take me about a year or so to finish working 3 or 4 hours a day on it due to the amount of content I will need to create and the fact that I haven't ever made a game before.
I don't think that you will be meeting your deadline for a school project unless you are some sort of uber genius or your class ends in 2011!
If you really do want to make a SSB style game tho get to work on collision detection and whatnot first. Make SSB with big cube men and figure out hitboxes and all that jazz first. Just some advice from another noob.