Matt,
You are just about to realize exactly what an RV can do for you.
What you need to do now is try to decide what you want to see and do. If you come back and tell us, I bet you get so worthwhile advice. There is just too much to make easy suggestions. We have been at this quite a while now and it seems like the list of places we want to get to only grows.
One problem with the east coast megopolis is that camp grounds are scarce and expensive, but there are still enough places that you can ONP for free. If you are not self contained, this is less valuable. Most of the east coast does not allow overnight parking (camping) at highway rest areas and the beautiful parkways are all pass-car only. But there is still a great deal you can do. I don't have to tell you that parking will be a bear.
In NJ, you probably live in a sub with an HOA. If you can, get in the habit of bringing the RV home the day before departure so you can load up and go with the sun. This what the family did from central NJ when I was much younger. Load and unload should only take a day and you can stack that the Thursday-Friday then Monday-Tuesday of the allowed time. That way, you can use the entire 16 days for your travels.
Speaking of that....
This is a new thing for you?
Then plan to put the RV in the driveway for your first night. You will learn a lot about everything real fast.
We are refugees from the megopolis and while we do miss a few things the crowds and choking taxes and regulations are some we do not. We do travel back there to visit family, and go to reunions, but otherwise it is tough. I did not see any reference to family. If you will not have yungons in tow, get out of the "Summer Vacation" mode. You can avoid a lot of the crowd this way. Just be careful in you planning. Many of the family attractions roll-up the week after Labor Day. Very few campground are still open in October.
Good Luck
Matt (another one)