1. in the first semester, you can only take 5 courses.
2. if you have done well in the first semester, the College of Sicence
will give you a special permission to take more courses. (I don't remember
how good would be enough). The number of extra courses that you can take
is based on the academic achievement, the better the more.
3. You don't get into graduate study automatically. You will have to apply.
There is a detailed criteria that measure if you are qualified to apply
It is hard to make you understand the schema, however, the speed that you
can finish whatever the program all boils down to how good the academic
achievement you can make. It is a fair game.
I wish you have understood. Otherwise, give me a call.