I would suggest you contact the following guide.
Drury Fishing Kenai Peninsula Salmon and Trout Charters
He is in the Kenai/Soldotna area, & the Kings should be in around then. He's a great guy & has a great reputation with the locals (that's not easy around here!).
He will be up front with you about your expectations & whether or not he can meet them. If he can't he will hook you up with someone that can. One of the nicest guys you will ever meet.