looking good if you want them to get bigger and swell up faster use some stuff called super nutriant from advanced nutriants its pink powder costs a bit but well worth it use from 3 weeks to 6 weeks
intake and outake air is big part of the plant needs and some co2 in there will make them like trees and also some waterproff reflective sheeting on the floor i have same sort of set up to you but only do 8 plants but get easy 100oz from 4 weeks in veg
if you want to grow faster i suggest replacing the cfl for one 60w led light much better and more light output easy to manage and cheaper on electricity