CSUCI Housing and FAFSA?

<p>Okay so I've been told that the hoising app for CSUCI opens up on April 10. I plan on signing up as soon as possible but I'm not sure if I'll have the money by then. Do you have to pay the down payment/app fee right there when you sign up? Or can you sign up and just pay the money later (as long as it's before the deadline)? Also, I haven't received my FAFSA package yet. They told me to wait until April so I'm hoping I'll get it soon. But if I were to receive it before the housing app, will I be able to use that money to pay for the down payment/fee or just for the actual cost of it? Or will I even be able to use it at all? </p>