That is pretty optimistic for Knies to get 2-3 regular season games and then play with Matthews with a non-Marner or Nylander option on the wing. As the opposition, I would probably just focus on Matthews and take my chances with Jarnkrok or Knies doing anything of significance.
The other thing is Acciari and Lafferty are right shots, Acciari has played C/RW this year, Lafferty either RW or C...he had some forgettable games/shifts at LW in Chicago, I probably wouldn't go this route.
Everyone has an opinion on it though