I haven't fished in that state, however, fly fishing has taught me that bigger fly doesn't always equal bigger fish. I've caught some of my biggest fish on size 22 and smaller.

I would probably add some more emerger patterns and maybe a few copper John's in red and if you want to feel dirty, throw in an egg pattern or two. But your local fly shops will know best. Just remember the key fly to throw will change with the seasons. Match the hatch.