That is one I have never hiked, just done a quick drive through and short hike. Be prepared for ticks as well as mosquitos and check with the rangers on whether those creeks will have water or not before you leave. Most important, have fun!

If you are looking for a quick get away close to the cities, try Afton. All sites are backpack/walk in and it is possible to get in a longer hike to the campsites if you wander a bit. The campsites are pretty well seperated and not too busy midweek. Don't know about weekends as I rarely get one off.