The guys who live near and those who fish there frequently have given good tips. I'm not going to be down there but if I were.......... There are 3 things I can count on almost anywhere in trout country come October; little blue wing olives, caddis flies, and little fish / sculpins and such. I would take the BWO's, Caddis, and streamers. I would rely on the area shops to provide the local 'secret weapon patterns' but would use my own stuff first. If all else failed I'd go to the shop flies...........
Good luck,
Ard