Not sure where you are in NY but the Tappanzee Bridge (Rte 287) is the only way I get to and from NH. GWB, Lincoln Tunnel, Cross Bronx, none of it worth the risk of being caught in traffic. The last time I drove 95 straight up it took 8hrs to get from from Philly, Pa to Springfield, Ma. Even at 11pm there was traffic all the way up. I vowed to never again go that route.
JohnnyT - I will call it right now....the worst part of your trip is going to be travelling across the state of Florida. I did a fly-n-buy for a motorcycle that was in St Pete a few years ago. I tell everyone that the best part about Florida is the sign that says "Welcome to Georgia".
Best of luck in your travels!