Playoffs 2017: Senators bench playing musical chairs for Game 1?

Bobby Ryan of the Senators celebrates against the New York Islanders at the Barclays Center on April 9, 2017. (Bruce Bennett/Getty Images)Now that the gang is all healthy, the Ottawa Senators roster for Wednesday’s playoff opener against the Boston Bruins has become a game of musical chairs.

There aren’t enough seats on the bench for everyone.

Among the questions:

* Will dynamic, speedy winger Ryan Dzingel be asked to sit out at the beginning to get a bird’s eye view of the intensity of the post-season?

* Could Chris Kelly, who won the Stanley Cup with Boston, be sitting on the sidelines when the puck drops?

* Does Zack Smith, absent since March 30 with an upper-body injury, automatically regain…