Kush -
Great lookin gals... looks like a tasty indica. Thats pretty good with the low # lights. I have 8 23w cfl's, one 42w, and a 4' dual tube T12 ( two 40w bulbs) in my cab, two plants.
Well theres no such thing as "to much light" and most people try to go with a base of 160watts per plant when using CFLs. Drop a few 23w or 43w in there for side lighting and it should help your lower branches yield quite a bit more.