Looks good! im going to stay tuned, def agree with adding some flowering nutes tho and pushing ur lights directly above ur tallest leaves! Stay away from nutes high in nitrate, or none at all and get something with potasium and calcium. hope that helps.
Honestly u need to get a small hps to beef up those colas, utilize light spectrums plants naturally recieve and use during thier life cycle in nature. Good luck