They're not ready yet. They definitely need more than a week or two before they're ready to harvest. I can actually see the trichromes on the buds and I can see that they're all standing straight up and the 'bulb' part of the trichromes haven't fattened up and started changing color yet. Many people harvest early every time and don't realize what they're missing until they wait those extra couple of weeks.
This page explains about trichrome color:
http://www.420magazine.com/forums/harvest-preparation-curing/110449-rosemans-determining-harvest-time.html
Another thing to keep in mind, is that the pistols (little white hairs that turn brown) of the flower will start curling in when it's getting close to harvest-time. If your plant is still making new white pistols all the time, that means she's still growing and isn't nearly ready to harvest. Some people say to harvest with 75% of the pistols turn brown, but I've had plants before that have buds which turn almost 80% brown so I thought it was ready to harvest, then noticed a couple of days later that the same buds had grown a whole bunch of new white pistols. With some strains (and in my experience with CFLs), pistol color alone isn't a good indicator. I always have the best results watching the trichromes and for when all the pistols are curling in.
When you think your plant might be ready, I urge you to take some of the top buds and then let the smaller ones have time to develop. That way you will get to see the difference between buds which have been taken earlier vs later.
With marijuana, the size of your buds are limited by your light, and ClosetKing is right about the CFLs. In order to ensure the biggest buds, you want to make sure that there aren't any 'shadowy' areas on the plant. Basically, a CFL provides light that is usable for only 2-6 inches away. Therefore, all the green parts of the plant should be within 2-6 inches of a CFL if you want to maximize on your output. If you have bigger bulbs, then they cover a slightly greater distance.
I would recommend getting a couple more (2700k Soft White) CFL bulbs if you think you might need them. I also recommend giving your plant nutes for at least another two weeks before you re-assess and see if you think the plant is close to harvest at that point. I have made the mistake of stopping nutes too early, and that stunts your buds even more. You start seeing bad nutrition deficiencies, and then at that point, harvest time really is two weeks away and you can't give the plant more nutes. If you do stop giving your plant nutes, you can still give them unsulphured molasses (I do 1 teaspoon per gallon of water, some people do more) as a natural way to get the plants some of it's nutrients. Molasses will actually make your buds tastier as opposed to nutrients which give them a weird taste so you can use molasses right up until you harvest the plant.