This cree neck has small 'furnace' patches. Not a big deal, but it makes the neck inexpensive Indian necks Pick any unusual colour I can find especially if they are in the bargain bin. Check for barb length and number of pin feathers. Different colour hackle have different standards.
Grizzlies are always good relative to others and so are red game.
This means you can save by using lesser priced grizzlys and reds, and that one is better served to use the best blue duns, creams, badgers, furnaces, etc. Quality is relative to the feather type. Tie skaters and spiders with good quality oversized hackle. These flies can be deadly in difficult situations. You can use a dubbing loop to create the hackle size you need by trimming as needed at the base of the flue then lock in with a thread loop or poly or any suitable floating dubbing.