I would suggest when you choose your hotel, prior to booking, make sure that if you decide to cancel you can do so without incurring any penalties.
For example, you may book now, and find a cheaper deal closer to the time.
Whilst you may find a bargain, November is not cheap in New York:
The first Sunday in November is the New York City Marathon
The fourth Thursday is Thanksgiving Day Parade,
Veterans Day November 11th is a federal Holiday, which means banks and post offices are nearly always closed.
Rockefeller Centre Christmas Tree Lights switch on.
I would recommend you book your hotel asap, as prices are likely to increase.
I am a Platinum member of ICH, so may be biased in my opinion, but the following website have hotels in and around Manhattan, with reasonable rates, and most hotels you can cancel with no penalty:
http://www.ichotelsgroup.com/.
Driver02