I know the lines aren't out yet (all of them) but here's my opinion on the average 5.5 total goals line

Philadelphia at Boston (OVER)
Nashville at Detroit (OVER)
New Jersey at Colorado (UNDER)
Buffalo at Toronto (OVER)
NY Islanders at Montreal (UNDER)
Vancouver at Dallas (UNDER)
NY Rangers at Tampa Bay (UNDER)
Los Angeles at Minnesota (UNDER)
Edmonton at Phoenix (OVER)
St. Louis at Anaheim (UNDER)

Feel free to correct me