Advice on a place to camp near Mt. Rainier and Mt St Helens

We've stayed at Seaquest a couple times. I would avoid Sites T1 thru T16. They have full hookups, but they're lined up one right next to each other. Last time we were there I couldn't open my truck door all the way without hitting the neighbor's picnic table. There are sites in the forested loop with electric and water that are much nicer. It's a great park to explore Mt. St. Helens.

Pat