I hiked the loop solo 7 years ago. I drove up the Smith-Etter road, parked at Kinsey Ridge, hiked down Cooksie Creek to the coast, then down to Big Flat the first day. The second day, I hiked down to and then up Horse Mountain Creek. I think I camped at Horse Mountain, or somewhere along the Saddle Mtn road. The next day I finished the road walk and went all the way along the King Crest trail and a bit of road walk back to the car.
It was a fun trip. The haul up Horse Mountain Creek I recall as being very slow and hot (it was mid July). The crest had very little water, I wandered off trail a bit to one spring (the name escapes me) and had to dig a hole, then siphon water with a camelbak hose. I also had perfect weather the entire time, plenty of wind, but no clouds or rain at all.
I'd recommend it, and do the same trip again.