Frank,
I am just setting up six different cameras in the TGD and naming them accordingly. Hope that'll do.
I got a question though, does the scene have to hold up when you zoom into the landscape? For performance reasons I was going to decisively limit the level of detail, but that also means that you do not want to lower the camera a whole lot or the results will be clearly sub-par...
Here's key frame 1 a bit further along.