I wouldn't bother. Focus more on your other units and you will do better in them.... you are doing very high scaling subjects as it is, so just work hard on them. Also it's a bit late to start now, most people have already thought up their ideas and stuff... you would have a lot of thinking to catch up on.
Then again, if you really really really want to do ee2, then go ahead. But don't do it just to have 13 units...