Toad,
The light put out by fiber optics is not suitable to light a large open area. the light is transmitted through the fiber and very little beyond that. I use fiber optics to light the portholes in my starships and the windows of my Titanic. I also use them to light the numbers , and for the fresnell light system on aircraft carriers. The idea is to get a bright definitive light in places were it would be impractical or impossible to get a light bulb.
For open areas, I use a mixture of incandescent bults and LEDs. White LEDs are bright, but expensive and you would have to use mirrors or gloss white paint to spead the light around. They last a very long time.
Incandescents give much more of a yellowish/orange cast, burn out sooner, but are easy to wire.