You still have to integrate in Myers, Sanheim, Morin, Hagg, Lindblom, etc, as the next wave and before you can do that they need to get some time and you'll need to find out if they are actually all players. If that's the route you're going I can't see that possibly happening in less than 2 seasons. By that time you're going to be paying Ghost, Provorov and others and you'll still have your other contracts like Giroux and Voracek, so if the cap doesn't significantly rise, you're right back to being capped again, with a few younger players, as we are today. That's exactly why I brought up the Hartnell trade and how the cap clearing measures turned more into asset allocation and not savings.
If they put 2-3 of those young D in next year it's going to be a total trial by fire situation and a lot of growing pains, but it's like ripping off a bandaid...at least it's done. If they ease in 1 or 2, you're talking about a 2 year phase in and then maybe in year 3 or so they're all competent to be meaningful players (if they succeed). Obviously, simple math means Giroux is 32 by then, Simmonds 31, Voracek 30 and you're probably still capped.
A potential trade could change all of that, but who knows what Hextall has on his mind on that front