I would say 4-6 weeks, I think I moved to the rim around about then on Bastille and it has grown just 2 more provinces since...be careful though, some worlds have been filled to capacity and closed, so really you are rolling the dice.
I usually monitor a world using the map. Just hit the button marked "Generate a static map" with all the settings at default and you'll get a good picture of how the world is developing. http://www.tw2-tools.com/en7/map/
you got a long wait.