I've been to all those with a buddy and his thirty-two footer. No problem.
Here's a tip for the HOH:
Upriver and before entering the Park gate, there are some drycamping spots right on the river itself where you'd fit, too. Wa. DNR-run...no fees/amenities, but you do need a Discover Pass- thirty bucks a year, good for day use at all State Parks, and required even for no-fee camping on other State lands. You'll get that back by saving the first two nights of fees you'd have to pay at the FS/Park campgrounds.
Link to state site
