If Power takes 8x8, you do it.
He wouldn't be getting paid like a norris caliber defenseman if he signs long term early.
Power isn't a norris caliber d-man yet. He's not close. He MIGHT get there, he's very talented.
There is ZERO risk waiting to NEXT year to do a deal. Zero.
Barring a herculean type leap, he's not winning the Norris on this team next year. Dahlin is going to eat all the power play minutes, so he isn't going to be able to put up the kind of numbers you need to get into consideration there.
He's a 10.2(c) RFA, meaning he has no arb right, can't be offersheeted, etc.
If you sign him to a 8 year deal whenever you can, you'll have him for 9 more years (last year of his ELC+ the 8 more years). You get him from the age of 21-29
There are three downsides here:
1. You will have his and Dahlin's contract expiring at the same time.
2. You ramp up his salary immediately.
3. Things always change. Maybe he gets sick of playing behind Dahlin, maybe he wants to be closer to family, who knows? The kids 20....he's going to be a different person when he's 27.
Now, let's look at a bridge + extension later.
A bridge is probably capped at the 6.5M or so a year. So, you pay a 3 year, 6.5M per deal.
After that, let's say he wins a Norris. You give him an 8 year, 12M per deal. Just a massive contract.
That's 11 years, 115.5 M over both deals. And it expires when he's 33. And if you REALLY want to do an apple to apples comparison, it'd be like an 8 year, 79.5 M deal. So, if you did an 8 year deal now, you'd save a bit of money.
But, the key difference is, you have a re-evaluation when he's 24 years old. You will know more about the player then, you'll see his development curve and really what his upside is. And he will know more about himself and the org. Does he WANT to stay here long term?
I think it should be a very rare thing to give out 7-8 year contracts to 20 or 21 year old players. The Eichel contract was a mistake, I thought the Samuelsson deal was a mistake ,and I think it'd be a mistake for Power. IF he becomes an elite d-man, yes there is potential cost savings. However, if he doesn't, then you are just burning cash (and cap space) before you need to.