Awesome - THANKS! Doesn't look like there's any room for a tent.
I am tempted to reserve campsite 4 and just sleep in the back of my Tahoe, while the others share a tent or two.
I'd say reserve # 4...I bet there's room for a tent in the space next to the picnic table and bear locker (when you look at the linked pic consider that the picnic table is pretty wide) but also unless there's some rule against it I don't see why you couldn't also put a tent in the driveway part of the site, either in front of a parked car or park your car in the main lot. You'll want to hang out/lounge at the walk-in sites, they're just more scenic, and you could use # 4 as functional space.