I have fly fished here but my species of fish are a lot different than yours. Around here I use clousers and crappie candy type flies for pretty much everything we have. Sea bass, perch, ling, kel cod, grren ling and whatever else will hit them. Smaller for perch and kelpies and larger for bass and ling. White is a good color as well as shrimp orange and pink both with some flash in them. I also use a bucktail streamer fly that I have tied for striper fisher's, I catch a lot of sea bass and they caught the stripers. I don't have stripers here or I would fish for them.
I have read a lot about it and more often than not clouser patterns in fish and shrimp colors are the go to. I have also read a lot about using Crazy Charlie's in salt water for a lot of species, again, tied in different colors to match the species you are fishing for. One salt water FF, I forget his name, uses clousers for everything he fishes for on fly rod in salt water.
I love taking my kids fishing, now if I could just manage to fish at the same time.