Go with the GH 3 part nutes, they are farily easy to get the hang of, just use half the recommended dosage for each stage of growth.
You also do not want to top your plants until they have at least 3 sets of internodes..at least I don't if I was topping. Also, if you must use flourescent lighting, tubes are better than compact bulbs. It is better to have the light emitting from the length of the tube than from a single point, you can get much more plant material close to the bulb this way.
Artificial light loses power quickly over distance. If you have two plants near a light, and one is one foot away and the other is 4 feet away, the plant one foot away is getting SIXTEEN TIMES as much light.