Yes, plan it befor rushing into things.
Start of with, for example take one of our city maps made by Inca or someone else and put the Npc's in place, then start working of the storys made by Xillix and Kixie. Build a main concept of the story (legens, myths, stories, whatever) with the Npc's in them. Remember to put things like Shops, quests, trainers, story tellers and other types of Npc's there. Then you can start working on the logs. I think it would be great if you could get each others msn or skype, because this will be a very big task.