It looks like your predictions were very close on the House and Senate. The GOP will almost certainly win the Alaska race (it's just a question of whether it's "Republican" Miller or "Write-In Candidate" Murkowski), so it will all come down to the Washington and Colorado Senate races to see if they get to 7.
Will there be a runoff in Alaska?
The GOP pick ups in state legislatures is what might be the big story this year.