Don't see how replacing 2 100 watt bulbs with 100 watt equivalent CFL's will improve much.
Another idea as long as you're at Lowes, is 2 cheap 4 foot fluorescent shop lights...the ones with the chains to hang from your ceiling. Then get an adapter to turn your socket into a plug, and a small bag of screw-in hooks, or plant hangers with a molly.
Hang the lights in the ceiling, plug the cord into the socket/outlet and you now have 4 4'foot fluorescent lights in your ceiling. You'll have more light, and because the fixtures are 4-feet long, it will be spread over a wider area.