First Grow question!

hello! this is my first grow and i switched my plants into flowering a few days ago. i'm growing 2 LSD plants, a white lavender, and a cream caramel! i put them under a 600watt HPS and i want to add some 6500K cfls to add some blue spectrum. i was wondering if i have them placed right or if they are going to make enough difference to use more electricity! let me know what you think.

CFL's need to be close (within 1 or 2 inches) to be most effective...if you could lift up the HPS light and the pots, then the CFL would be closer to the sides which will help

your plants will grow near the cfls in about 2 weeks, if you have only just switched to flower they will double in size