I really don't want to give up Laf, Byf or Clarke so I would not be going for a 1c and we have enough wingers.I think the plan should be resigning Laughton AND going after a legitimate #2C, or even Nylander/Matthews/Hischier/Thomas type of player.
Laughton can IMO play in a #2C role. He put up 43 in 78 on (then) very s***y Philly team with bad linemates. If Phil could do it, so could he. That would be a very risky scenario when it comes to trying to win, though, and Laughton is best suited as a #3C. But even in that role he's worth 5 mil IMO, with the rising cap. That's just how it is nowadays with inflated prices.
Do not forget that he has other intangibles apart from putting up 3rd line points. Shutting down opposing team's top players, killing penalties and perhaps most improtantly he's apparently a great locker room presence.
A far bigger issue than 5 million 3rd line center are the 8,5 million tied to the bottom pairing D-men. Add Joel's 4-odd million to that number for 3rd pairing D-men as I can't see him keeping up his last season's play, though I'd rather keep him over Dumo or Ceci. I'm afraid Ken will be unwilling to admit his own mistake(s) after only one season...
2c is very important as Danault demonstrated.
Laughton is not going to cut it for any real team progress.
Joel's has been way underrated especially with his partnership in developing Clarke, Dumo has be wrongly maligned.
Ceci is the main problem and no one wants that contract.
So I think you are stuck on D.