I know you didn't ask, but I thought I would throw this out there. You can get a closer view from some of the tour boats. We did a speedboat tour that was only 30 minutes long. We got pretty close to the Statue of Liberty. And the staff on the boat walked around and took pictures of each family with our own cameras. It was so much fun.
We did the Shark Speedboat tour. It was $24 for adults.
http://www.nywatertaxi.com/tours/shark
No matter what you decide, have a great trip!