I need to buy and set up a pair of semi-permanent low-temperature lights (CFL? Kinoflo? LED?) in some sort of controllable-throw diffusing configuration (Softbox and grate? Diffusion in front? Square? Strip-box?) mounted out of sight but near (usually above but perhaps below also/ instead) two large windows in a small room to augment the light coming through these gelled windows to simulate the windows lighting the room. The arrangement should be dimmable in some way and - ideally - disguisable as a practical or decorative element so as to not be obtrusive when it has to appear in a shot. This is one of my living spaces and will be shot in often - ideally I'd set something up which can stay in place and contribute to the decor.
The room's 13' x 11' with a 10 foot ceiling - the two 6' high x 2' wide windows face south and east.
It would be great to be able to have the ability to adjust the throw of the light so as to adjust the darkness of the walls.
I'll need to make an excellent choice - retaining continuity despite changes in sunlight penetration will be challenging enough. (The plan is to shoot south and westward when the penetration's as desired, and the opposite way when it's not.)
It's going to take some experimentation, of course, but it would be great to get some ideas to help me narrow down the options and maybe decide which of these demanding objectives might require some compromise.
I'll be using an FS100.