It's not worth worrying about at this point. The Pens will play whoever they play. Would I prefer it to NOT be the Flyers? Yeah. Am I going to lose any sleep over it? No.
Barring something really crazy happening, the Pens will win the division and finish as the 1 or 2 seed. Montreal or Boston will win their division and be the 1 or 2 and the 4 seed. The rest of the teams? Who knows. There's a lot of teams within a few points of each other and the shuffling is likely to continue from now until the day the season ends.