Hey gang, got a group of 10-15 looking for a place to camp in the Mt St Helens area. Preferably something kinda secluded,

and

friendly, where we can stay up late and not have to worry about being too noisy. Let's just say we'd like to avoid any imperial (ranger) entanglements. Something with a bathroom would be nice but not a deal breaker.
Got people coming from Seattle & Portland, trying to keep the drive under 3 hrs. Any help would be greatly appreciated!!