We aren't going to need to get to six. The NCAA has already ruled that teams don't need to get to any particular record this year to get a bowl bid. So the ACC is going to fulfill all of their bowl obligations, no matter what the team's records end up being.
The ACC has at least 10 bowl game affiliations this year. That does not include the playoffs. If an ACC team makes the playoffs that would mean 11 teams. If, for instance, Clemson makes the playoff, the Orange Bowl picks Miami and one of the other New Year's Six games picks Notre Dame that would mean 12 teams. Out of 15.
In short, ACC teams (and teams from some of the other P5 conferences) with losing records are going to play in bowl games this year. That is almost a mathematical guarantee.