Washington or Oregon Campgrounds or even Idaho!

Soon to be resident of Richland Washington looking for any and all campground suggestions!!! Hoping to find some coastal campgrounds to take advantages of (would be a 4hr hike) but also hoping to find some in and around Mt St Helens and Mt Rainer that would be worth our time!! I've done some research, but I truly do appreciate the first hand knowlege of the folks on here!!!!!!! Can't always trust those other websites!

As we will be traveling from North Dakota to relocate we'd also need a good place to stay in western MT and Idaho!!!

We stayed at Diamond Lake, near Crater Lake National Park. Very nice campground on Diamond lake with extensive bike / hiking paths.

We also stayed at Sunset Bay State park, Near Coos Bay, that was with our old trailer and I don't remember if there was enough room for one of our fivers. Just a short walk under the road to the beach.