Amy,
I have gone years with not using lights and years of using lights. It really depends if you are trying to get some early eggs to raise a few chicks in January/February for the early fall show season or sales of eggs, chicks, adults to buyers or are you sustaining and breeding, but not worried about shows or sales.
If I was going for egg production for my own use and my own flock improvement I would not light the hens. For winter egg production I would have a few hens from breeds known for winter production. I have had good luck some of the sex-links and I know a few folks here have Chantecler which are bred to be a winter laying utility breed.
I am currently lighting some of my birds in the hopes to get a few eggs for early hatches for showing, but I will be honest and say that the majority of my hatches are in April when the weather is better for raising large numbers of chicks. I will also be honest and say that since I have had some that are on lights and some that are not in the past I have seen very little difference in when the hens started to lay.
I think that consistency in temperature plays a part in egg laying. Missouri is notorious for inconsistent winter temperatures and I think that is why my hens are a little later in laying regardless if I light or not. I am becoming convinced that if I had a main building with realatively consistent temperature that my Ameraucana would lay better in the winter, but we swing all over the place (this weekend it is predicted to go from sixty degrees to the twenties) and I think that is hard on the girls. My hens are maiking egg laying sounds, but are laying very few eggs. Several members in the northern states always have eggs and chicks before me and I am convinced it is having a building with a consistent temperature that helps kick in the laying based on the day length . . . I think the swings in temperature I experience make the hens hold off until the temperature is consitent.
I hope my ramblings help.
Michael