Hi Nikko.
You have a few different points of inquiry there but to hone in directly on the last part…”retain the rural feel to it while letting the adjacent areas being developed” I would recommend looking at a talk by Shane Coen of Coen and Partners. Its on iTunesU if you search for the “Down the Garden Path” lecture series at Princeton.
I don’t want to sound like too much of a fanboy as I have mentioned this same talk in a recent post on another thread, however the firm’s work is really beautiful and addresses the very issue you are looking at. I really think that if people want to live outside the city that these projects are an excellent example of how to retain the rural aesthetic and value the context of the place in which they are built.