I love
Gaia. I pronounce it "GUY-uh" too and that's what stops me from suggesting it more. I don't think "guy" but I can the general public doing so. Then again, the general public wouldn't know what to do with half of my favorites. So what do I know? Besides, there's teasing potential in just about any name, if one really wants to find it.
You should use
Gaia. The mythological association alone makes it wonderful. Do you have any mn thoughts?