this is really not the summer to go looking for snow in WA because the winter didn't provide any but your best bets for walkups would be getting up to washington pass, silverstar mountain, mt daniel or mt adams early in the year. if you find someone to teach you the basics of glacier travel that would open more doors. baker is not hard to climb nor are several of the mountains of the north cascades and will make good descents if you're willing to navigate glaciated terrain.