Get as much light as you can. Ott-like floor lamps are also great for focused work.
Whatever you do, if you want a ceiling fan the get the lights to go with it. If your lighting is above the fan then you will have a strobe effect and won't like the fan on when you are working.
Other than the above, could you install some solar tubes for more daytime light? I love mine as it doesn't let in heat or cold and really brightens the area up.
ali