A lot does depend on Puljujarvi and #8 turning into very good players, though I don't agree that 1st liner is the threshold for success. And I'm not super high on Larsson, but I think he'd be fine on the 2nd pairing. I guess the question is if he's $4m better than what we can call up from Iowa, which he may not be.Pulju would have to turn into a 1st liner for this to be anything other than awful. Larsson isn't very good and would be a terrible fit here.
There's also a tacit assumption that we can sign a free-agent forward if we want to stay competitive next year. I hadn't really thought that far ahead, though.