I don't the defense will be top 10 this season. But I think there's enough in place to get up to the top half of the league which, combined with the offense, should be enough to bring Super Bowl contention into the conversation.
We were only sweating last season because of the Rodgers injury. Otherwise the team finishes in the 11-5/10-6 range and would not have been worried about the NFC North at all.