Blue Fly B&B and guide. Yes, I'd do it again. There's only one motel left in King Salmon, the other having burned down last year. So there's not a lot of choices of place to stay or eat (2 restaurants and neither being particularly good). The B&B is a nice place to stay and far cheaper than the lodges upriver. You need a boat for river access. Patricia has a good sled, and she knows the river as well as anyone and better than most.
The only problem with a Sept or Oct trip to Alaska is that the weather is such a crap shoot. With the higher airfares this year, I'm less certain about rolling those dice.