I really don't know about the final cylon but the only two Adama' it could be are Zach and Joseph. Anyway here's what I think will happen when they get to Earth. It was once populated by Cylons and humans, one in command and the other slaves, which I don't know. But they get there and the place is a wreck because they killed each other and destroyed the planet. So they decide, for each others sake, to live together with one God (I'm not religious by the way). The final five I believe left Earth with the 8 humans and settled on Cobol and had a go at each other again so they went their separate ways. And here we are again, the cycle that keeps happening again and again. What do you think?