The "train room" has three 4 foot florescent fixtures down the center of the room, but since this is a shelf layout, I know it isn't enough around the perimeter. The room is 27 x 21 feet. What kind of lighting would y'all suggest? I suppose at some point I will want to take some nice photos, but photography is definitely not one of the reasons I am building the layout. More 4 foot florescents? Track lighting with incandescents? Track lighting with the new "screw-in" florescents?