In either direction, you'll get better results mounting outside in the clear.
Quite a few of the NY signals should be viewable.
A Winegard HD7698P paired with an Antennas Direct CPA-19 would be my choice. The antenna needs to be mounted high, clear of obstructions in the direction of NYC.
Don't expect to be able to combine the two antennas into a single coax. There are several ways to deal with multiple antennas.
http://forum.tvfool.com/showthread.php?t=2882