I'd rather go for Carlson + quality second line forward -- either Neal, Nash, Perron, JvR, or Maroon via UFA or a similar player via trade (Severson?). I wouldn't turn away Tavares obviously, but I think that scenario is more realistic.
I think the above addresses our needs better while also allowing the kids an opportunity to play:
Hall - Hischier -
Johansson - Zacha -
Coleman - Zajac -
Wood - Boyle - Noesen
Cycle through Palmieri, Anderson, UFA/Johansson, Quenneville, and Bratt on the right side. If all three young guys struggle, Noesen is fully capable of playing 3RW as well.
Greene - Vatanen
Mueller - Carlson
Butcher - Severson
Lovejoy - Santini