I love Ehlers and think he'd become our 4th best forward instantly but I don't know if we can hand out a 7 year contract to a 29 year old.
Pageau's contract is too heavy. I'd only do it if they'd take Palat back but Lou is gone so that isn't happening.
Ehlers would come down to protections for me. If you can get those last 2 or 3 years with protections that'd make him movable down the line I go for it. He'd be an astronomical boost to the offense. If he really valued the protections though then I'd probably be wary.