kararenee,
Hi again! Hmm... South is best for growing cacti/succulents indoors. I did read that all you have access to is West windows. It would be okay to supplement lighting but not any ol' light will do. I believe you have to have compact fluorescent bulbs, and specific ones at that (plants need certain spectrums of light, I think red and blue). I'm sorry I can't be of much help in this area, I have never grown C&S under lights and don't know much about growing plants under lights in general. I hope someone else will chime in on that for you. Again, sorry I couldn't be of more help.
Planto