Getting six wins out of the division is a more reasonable goal. The seventh requires one of the three making the playoffs in the right seeding position, which is possible, but...
The Pats are in decline for the most obvious of reasons: most of their key contributors are pushing 30 or past it at this point. That's not to say that they're not still a damn good team, because they are, but there are going to be some dropouts in the talent scheme sooner rather than later.