Might I suggest that upon arrival into MSP, you saunter into the World Club nearest you(if you own a membership) or if not - put your carry-ons in a locker and go to the First Class/World Business Check-In line at the main counter, and work your ample charm and have the very accommodating (my personal experience) counter agent put you onto the earlier flight to SEA? As a Gold WP, they are obliged to be a little more energetic in their quest for your satisfaction with the airline. @:-)