re: Keep the apartment.
I had a ball at MSC 2008-13. I am not saying don’t apply. There were some a-holes, but so what?
When you answer the security form they will need a real address. A p.o. box masquerading as one will be found out and will not be accepted.
A guy in my new intake group (NEO) from rural Hawaii could not provide a street address (second house on the left after the big haystack kind of thing) and got a lot of pushback. Not sure if he ever handled it as he quit soon after.
Good Luck, Paul K