Sure, check out some good hydroponic/garden centers online. There are several. I like HTG Supply. Check them out... just google and you'll find them.

HTG has a 250W or a 400W for about $120. That's a pretty good deal. With a 250W light you could probably yield 3-4oz if you got your watering down And it will take you less time than CFLs and probably be higher quality. You can even get a 175W if that's too much for you, but I think it's better to go bigger if you can... you may want to expand in the future.

Do you know about lighting at all? Check some of the FAQs on here. Most use either High-pressure sodium (HPS) or Metal Halide (MH) HID lighting. MH is good for veg, whereas HPS is better for flowering. I've seen great success for people who use HPS all the way through! So, either get an HPS or get an HPS/MH convertible ballast (which is $50 more and you'll also need a second bulb).

With an HID you'll get more heat since you'll be running more wattage... so you'll also have to think about ventilation and cooling. Just a strong fan blowing between the lights and the plants would probably do it when you're talking a 250W.

Good luck! Read the lighting FAQs. You know if you have the scratch you could just go pick up an HPS and put that over your existing plant and watch things pick up.

Also, as far as watering goes throw the schedules out the window! The plants water needs are quickly changing as it grows so as soon as one watering schedule seems routine... the plant has grown enough to require more. The best thing you can do it use your moisture meter and learn how a dry/moist/wet pot feels. It is going to be difficult to keep ideal waterings until the plant grows into that pot.... which may be awhile unless you upgrade to the HIDs.