I think Carly will win
Diamond will sign with Disney channel
Emblem 3 or 5th Harmony will be signed by Simon.
Tate goes back to construction
I just don't know about CeCe. The only white girl doing what she is trying to do right now is Ke$ha. CeCe is waaayyyy hotter than Ke$ha too so she could have a chance in the industry right now. It was much tougher when Britney started out because you also had Christina, Jessica Simpson and Hillary Duff. If Cece was gonna make it big in the white girl pop scene, now would be the time.
I agree with a lot of what you say, though I don't think Tate will go back to construction. I think he's going to get some gigs to support him enough. He might not be a millionaire, but I think he'll be able to make a living singing, at least, for awhile after the show.
For Cece to make it, she needs a voice coach to work with her big time. She hasn't sung without pitch issues the entire season or since her audition. She's got some pipes, but they're not consistent. Isn't she herself a voice coach or was that someone else?