Nathan, I do have one suggestion for the excellent setup you'll be getting: since you'll be using a screen with a significant amount of clear space beneath it, a better choice for the center would be a vertical M22(they're sold singly), as Tom mentioned previously. This should give a wider and smoother horizontal dispersion. If you're ready to buy now, note that a price increase occurs on Oct. 1st.
As to speaker wire, an excellent explanation by a veteran audio professional
found here should be studied to help you avoid some of the high-priced "magic wire" nonsense which pollutes the audio scene. As mentioned, regular electrical wire from local sources such as Home Depot or Lowes, or a low-cost online source such as MonoPrice does this very simple function as well as it can be done.
