Personally, in your situation, I'd stay in ANC a couple years.

First, you'll be senior faster, hold better lines, make more money. Additionally, you'll have the opportunity to sell back vacation, trip trade to increase your line thus make more money.

That will make your ability to afford the move to SEA come faster.

You'll have more time at home with the family in ANC as well. As long as the family can stand living in ANC, you're golden.