Hey Foxmiller, I obtained an answer from the International Advisor for my questions. Concerning the time of start of school, he said it is very important we are on time, he said this, wait i will show you:
"Your I-20 that you should have received from the university gives
you a date by which you need to enter the U.S. The immigration officer
when you enter the US is not required to allow you to enter after that
date. In addition, if you are late getting to the university, there is
also a possibility that they will not let you start classes after the
start date."
So we better watch out, I am even considering waiting till next semester and delaying the interview for a week or 2. You should email him here:
crawleyj@gvsu.edu
His name is Jim, he answered me real fast and he is very nice and informative.
Ask him your doubts and let's see what happens. Good luck man.