Wow...that's real cool. You may as well include stopping by my place of employment (I'm in the FD)...we can have lunch or something.
As a New Yorker, I can give you a complete list of things to see within the FD, especially for a struggling college student...these locations are free!
~Statue of Liberty - Our lady in the harbor can be viewed from Battery Park...if you want to take the ferry over...I think it's still a resonable price.
~South Street Seaport - Free (unless you want to eat and/or shop).
~Chinatown - It's right next to Little Italy
~St. Paul's Chape - Oldest church in NYC. It now serves as a Museum for what I will only term as "that painful event". It's also right across the street from me.
~Irish Memorial - Located within the World Financial Center. Depicts the Irish Potato Famine in the early 1800's
~Jewish Heritage Museum - Located just south of the World Financial Center
~Fraunces Tavern - Well, G. Washington used this pub as his HQ.
There is more...when are you coming in?