For 9 years my wife and I ran RV caravans. We ran 10 caravans to NewFoundland and the Maritimes. On a 58 day trip you will have a wonderful time. We are particularly fond of NewFoundland and have returned there after our "caravanning days".
The advantages of a caravan are that you will probably see and do things you wouldn't have otherwise, you will meet friends that you will stay in contact with for years afterwards, and you will have the security of numbers and staff will help you if you have troubles.
The disadvantages of the caravan are that you will be tied to a prescribed schedule. You can go off to something not on the caravan, but then you'll probably miss something on the caravan that you have already paid for.
So if you decide to go, I'm sure you'll have a marvelous time.
Ed Headington