I suggest you put as much helical on your arrows as you can get. If they won't put a full helical then get as much offset as you can get.

The more helical or offset the more wind they catch and the quicker the arrow is straight and the more control they will have over the broadhead.

I reccomend feathers over vanes also. Better arrow flight and more durable than vanes.

I really like everything you have listed with the exception of the flatliner sight. Not worth it IMHO. A better choices would be a Montana Balck Gold dusk devil. This is a very rugged sight with a 100% full lifetime warranty. Other good choices would be Cobra, Toxonix, Tru Glow.

I am assuming that you will be hiking and stalking elk and you will likley be shooting with the quiver on. You may want to consider going with a permanant two piece quiver. This will offer better protection for your arrows as it will grip them much closer to the fletching and be much more rigidly attached to your bow. Either way make sure you practice with the quiver attached. If you sight in with it off you will likley be 2 - 6 inches off from where you sighted in with it attached.