I'm using 3 26w CFLs, 1 43w CFL, and the standard aerogarden lights on the side. Yes, I know it's not much light, but thats my budget for right now. The room stays about 78F all the time.
Have you thought about trying to get your lights closer? They are pretty close, but you want to get them as close as you can without burning yor plant. Try using a white shower curtain to hang up around your bush.It'd probably be pretty easy.