Stealth grow speaker! Please read!!!!!!!!!

hey everyone, Im currently growing 2 bluerberry in a speaker i got from sunlight sheds. Sun Speaker. Dimensions: 20" x 54" x 12" (DxHxW) the plants are about a foot tall, butt i only have 150 watt hps in there. Can i add CFL along with the hps? Crazy pictures coming soon. pleasee help with suggustions i want atleast 400 watts in there and i feel like i can hang some cfls

yeah you could put them lower in the speaker to add light to the bottoms of the plants i feel like they will get bushy and start blocking out light to the bottom