I need help with track lighting. I have a large room with high ceilings, 16 - 18'. I have two areas of the room I need to light up and control the lighting (dimmers) Maybe using 3 or 4 heads on each track. One track on each end of the room. The room is long and narrow. I was hoping to get something bright enough to really see when sitting on the sofa and yet be able to dim for more softer light. Any advice would be much appreciated. I was looking at Juno tracks..do any take a 75 watt bulb and dim....