I understand your situation! I am from Indiana and applied in multiple locations, two of which on opposite coasts! ? It is hard to come to terms with leaving loved ones. But you can stay in touch and you'll make lots of new connections with your cohort!
It's nerve wracking to consider housing with so many variables up in the air before you get accepted and make a final decision. But remember that the area you're moving to will more than likely be a "college town." Oftentimes, towns with schools rotate quickly between tenants. People are coming and going all the time for various reasons. Many town residents are students just like us, so their living situations can change at the drop of a hat. I would recommend getting familiar with Zillow, Apartments.com, or HotPads in the areas of the country you're looking at. Pick 3 or so places in each city that you could definitely see yourself living at and bookmark them. Depending on how comfortable you are on the phone or email, you could reach out right away to a coordinator or property manager and let them know your situation (that you may or may not be putting in an application and why). Most housing websites (and rental company websites, too) let you set notifications for when floorplans/houses you're interested in become available and you can often even filter them to be around your desired move-in date. Having options and being ready to pull the trigger as soon as you've picked a program will get you a place faster I feel like! If you don't start researching housing before you decide, you might run into more roadblocks.
Hope this helps ease your mind! Good luck!