Colleges that could accommodate me?

I recently placed my housing deposit to attend UMass Amherst in the fall. However, the cost of attendance for me will be high (~$23,000/yr, not counting $5000 in loans offered by UMass). My siblings are in private Catholic elementary schools, but the FAFSA does not take this into account. I expected to receive more merit aid than I did (I am valedictorian of my HS class and a National Merit Semifinalist), but it was not to be. UMass was my best option out of the colleges I was accepted to. Are there any schools in the northeast where I could apply late with reasonable hopes of getting a better deal? Any help would be appreciated.