New York is not as expensive as most people think, especially if they follow your advice. I just checked Orbitz. $507 flight arrives Noon Friday and returns Monday. $89/night hotel at the Newark Ramada. Take trains from EWR to Penn Station, go upstairs, and you are there.
It isn't cheap, but this is the same kind of money you would have paid in San Antonio.
Be careful at the Newark Ramada. Be careful setting foot in Newark period.