yeah beacon hill is definately a park to stop at. and you should probably hit delridge, greenlake, or if your up further north, hit up the everett plaza, the new zumiez warehouse park, and martha lake. i've never been to orcas, but seems like everyone who takes a trip out to washington spends some time there. pretty sure camping there is a go too. battleground is fucking sick to hit when your on your way out of portland. you could probably find somewhere to camp around there as well. i did a trip over there during the summer and we camped in a little town about 15 minutes out of battleground in yacult by this sweet swimming hole called moulton falls. we just pitched a tent at this fishing spot there, but if you plan on camping in a camp ground, which there is one in that area, i advise making reservations early on because it fills up quick. hope some of that helps.