What is the size of your grow space?
Six plants sounds like a bit much for only four bulbs. I currently am running twelve 23 watt CFL's on one plant alone that is 5-6 weeks into veg. I am using the SCROG technique to get the most out of my light. I have 8 sq. ft. of grow space and even with my 12 bulbs (19,200 lumens@312 watts) I am still lacking an optimal amount of light. Optimal light output=5000 lumens per sq. foot. I'm at 2,400 lumens/sq ft.
IMO your CFL's might work "okay" on your auto flowering strains but as for your indica, well, you'll need more light in order to get a good harvest.