1) Practically speaking, yes. Only Fluke and GT have 2 ACC losses in Coastal.
http://www.espn.com/college-football/standings/_/group/1
2) Sort of Miami's to lose. Also UNC, VT and UVa are undefeated in ACC. Given caliber of play so far, I expect UNC or VT to win Coastal. Miami is not that good on D and they don't have a mobile enough QB to be a contender IMHO. UVa's only game and win is versus Fluke.
3) I'd hope both make CFBP. But it will largely depend on both not losing a game from here on out and how many undefeated teams there are. There is a lot of football to play and as we saw yesterday, anything can happen.