Hehe, this is good stuff you are very creative, that is how things happen on my end. It all starts with one zone and the story just evolves, so I recommend you just dive in with what you have written above. And then let the rest play out, the creation process is a wonderful thing , you will start to basically paint a painting so to speak. And not even knowing what it is your after it will start to take shape into something people enjoy.
Keep up the good work , sorry LORE has always been one of my banes so can't help much, I just am good at creating content without the lore usually. (But i'm trying to change that)
Mortenson
www.raidaddicts.org