The balance of the power was in the Atlantic the past few years. This year it shifted to the Metro with both wildcards probably going to that division.
That would make it tougher in the Atlantic as it'll be a race for 3 spots and Boston likely to take one of them. That leaves the 5 teams you mentioned for 2 spots with an outside chance to take a wild card for 3 spots. 5 teams for 2 spots is a bigger fight than 5 teams for 3 spots. Toronto right now is leading this group of 5 based on points per game.
Considering the start they had with a rough schedule of back to backs, Backups being bad, bad coaching, injuries to Hyman, Dermott, Tavaras, and Marner, they are in a good spot right now to be in the thick of it. Hyman, Tavaras, and Marner was their top line last year. Playoffs don't start in December. They certainly don't start in November!!!
Edmonton might not make the playoffs even with the wild start they had.