Boston University Cost

BU is my top choice but the cost is holding me back. I received no aid even after appealing for more and only got $5500 in federal unsubsidized loans. I will have to take out loans for the last year or so if I attend. Any tips on how to handle this cost while I’m in school and what to do once I graduate? I may take a gap year to make more money and pay off some of my loans before attending grad school. Advice would be greatly appreciated.