I am having to replace my living room ceiling and want to replace old recessed lighting with something more efficient. I have only a low light ceiling fan in the middle of the room and do a lot of reading and paperwork in the living room. There are no options for lamps near the furniture. What type and size recessed light should I use and how many cans should I use. Should I place them around the exterior of the room? I will have them on a dimmer to allow for a very bright room or lower light options. Thanks for any advise.