Thanks Nemisis. That was a good overview. My challenge has been that I spend an enormous amount of time digging for info in the somewhat weak user docs (e.g., no "chunking" in the help docs). I didn't want to spend a week on multitexture terrains only to learn that I lose shadows. I won't be deforming, so chunking is still in. It looks like it's time to research mip maps (I'm open to anyone's suggestions regarding resources about mip mapping terrrain...).
Thanks again.