We always take 287 and the Tappanzee Bridge. Tappanzee Bridge is actually in halfway decent condition the last time we went over it a couple weeks ago. Seems like it is best to stay in the middle lane - right lane seems to be roughest.
If you look at a map, 287 loops right around NYC. Be careful not to get caught on "parkways", usually trailers / campers are not allowed on them. New Jersey "Garden State Parkway" is different - everything is allowed.
Honestly, some of the worst traffic you may encounter is in Connecticut, as you get closer to New York. I have given up trying to figure out "good" times to travel I95 - if it isn't traffic, it's construction, or a vehicle accident. Just be prepared with "book on tape" or whatever.
Get an EZ Pass, it is really nice breezing through the tolls. An EZ Pass can be setup for a vehicle towing a camper, just go online and fill out the proper information.