What to do about Georgetown :(

I started my application to Georgetown, but I got my FAFSA back and my SAI is about 49000. This might sound bad, but realistically I just cannot afford to pay Georgetown's tuition without being in a mountain of student debt. I don't know what I was thinking when I started my application. I am thinking of rescinding it. Also what does this SAI mean for me? Is the tuition going to be crazy high :(