Naw if KK's playing Domi hits second line

Tatar - Danault - Gallagher
Drouin - Domi - Suzuki
Lehkonen - Kotkaniemi - Armia
Byron - Poehling - Evans

Chiarot - Weber
Kulak - Petry
Mete - Fleury

Price
Primeau

I’d be more apt to put KK & Evans at C instead of Domi & Weal.

I don't want to rush Kotkaniemi in a position that is crucial in playoffs just yet

That’s fair. Although it’s not like Pittsburgh’s 3C will be very tough to match up against. It’s mostly just because (other than 2 or 3 games for a few shifts on the 4th line) KK hasn’t played wing in 2 years, so it would probably be easier to stick with the position he’s used to.

My lines would look similar to this but with a few minor adjustments

Tatar - Danault - Gallagher
Drouin - Suzuki - Domi
Lehkonen - Kotkaniemi - Armia
Byron - Evans- Weal (I chose Weal here for 2 reasons. 1. He gives the Habs a second viable center for defensive zone faceoffs to take some of the pressure off Evans, 2. speed, This line was very fast when they were put together at the end of the year and created a lot of havoc for other teams)

Chiarot - Weber
Mete - Petry (Unless Romanov is available then Kulak sits)
Kulak - Fleury

Price
Demchenko (Throwing Primeau to the wolves this early in his career could be detrimental leave him as the third option, plus it gives Demchenko a chance to prove he is a reliable backup for Price next year)
Primeau

These playinns should be seen as a free roll, not crucial.