You don't really need to get on the bench at 0'dark 30, but about an hour before day light will get you a decent spot. Not too crowded for springers as there are more fish being caught at Drano and the Wind. Mag Warts are the norm for springers although the best fishing from the bench is the fall Chinook run.
Watch the boundry markers. Cast too far out into the Columbia and you may go home with a healthy ticket instead of a healthy Springer!