I cant give you great audio advice as I am also a novice at all of this, however I can talk to you about cabling. Cat6 is capable of running at gigabit speeds, cat7 is also on the way soon and will be even better. The main use for fiber optics is the distance limitations of cat5 or cat6, 325 feet I beleave and that is to include both patch cords, one at the router one at the computer. Fiber Optics is expensive and a specialty item. You do not need it in your house. It is more than likely that most home systems will go wireless. I work on fiber optic, cat5E, and telephone systems on a daily basis. I would NEVER waste money on fiber in the house.