nice start. flourescents are very slow and not enough light you should go get some compact flourescents. there those tornado shaped flos which eat up 20-40 watts and give off 5 times the light. there not expensive for vegetative 4 should do fine angled correctly. 6500k spectrum is best for vegetative 5500 is ok ive heard.
for flowering females hopefully well get there you will want 5-6 lights per plant or say 8 for 2 plants angled correctly. they should be 2500k spectrum or else buds dont fatten up that much. and you could still have one or two of the old lights there too.

hope to see some pics if you can
keep up the good work!