Keeping him on a wing is still an option of course, but it will also depends how productive gonne be Monahan and Dvorak as middle-six centermen . And Newhook is also an option.
It's not the only option (playing Dach on the wing), but, if the goals is to make all of Caufield, Suzuki and Dach reach a new level this upcoming season, it's the best option right off the top.
Of course, that can always evolve over the season and another answer for RW on the top line can always emerge along the way.
I'd prefer Dach back on the wing with Suzuki over Monahan because, if Dach plays C, I'd really like Monahan to be on his line to shelter him and serve as a mentor at the same time.
Since I think that Anderson on the first line holds back Suzuki and Caufield, it would have to be Newhook, most likely, but I'm not confused that this will enable Caufield and Suzuki to reach a new level.
Caufield - Suzuki - Newhook?
Monahan - Dach - Anderson?
Slafkovsky - Dvorak - Gallagher? (Who else?)
RHP - Evans - Armia
-OR-
Caufield - Suzuki - Newhook?
Slafkovsky - Dach - Monahan?
RHP (Lavallagher) - Dvorak - Anderson
Armia - Evans - Gallagher
I think Prefer the second version of the opening day lineup.