<p>Have you explained your situation to Stony Brook?</p>
<p>The bigger issue is not that you will not be able to pay the deposit at Columbia GS, it is that unlike Columbia University, Columbia GS does not meet 100% demonstrated need. After you pay the deposit, how are you going to pay for school?</p>
<p>Are you a NYS resident? If yes, I would recommend going to stony brook. Since you are getting full scholarship - (is it covering room and board or just tuition and fees?), they may be more amenable to working with you. Even if your scholarship only covers the tuition, between Pell and direct loan, you should be able to pay your room and board in order to have a roof over your head.</p>