Welcome to the RTA forum!

I think you're going to have to narrow things down a bit? Are you planning to tour the entire east coast from Maine (or even Canada) to Florida or are you just thinking a section of the east coast? A RV will not really be the ideal form of transportation if you are planning to tour places like Boston, NYC, or Washington.

We'd also need to know a lot more about you and your trip. How much time do you have, who makes up your family, what kinds of things are you interested in.

Basically, to start, you need to figure out the basic idea of what you want to do and what is a must see/do for your family. Once that step is down, you can work to figure out the specifics of how to do it, as well as find things to fill in the gaps between those "musts" for you.