New Providence is VERY nice.
The schools are great. It has its own high school.
It is a beautiful area with nice homes, from small capes to larger colonial type homes. Plan to spend 700K at a bare minimum, $850 would probably get you something nice. Look at
www.gsmls.com.
There are a few restaurants and shops, a grocery store in NewProvidence- but not exactly a "downtown". However you are about 10 minutes from downtown Summit- which has a lot of nice shopping, restaurants, and a movie theatre. You are also about 10 minutes from Short Hills Mall, which is probably the best mall in NJ.
There is a train to NYC.
You cannot go wrong in New Providence....
If you do move- check out the Newcomer's Club- very active and nice people (most w/ young kids)...