switch to a couple 150 watt HPS, light penetration is better than CFL. Also, make sure your lights are out of burning range(more than 6 inches) from your plants but no more than a foot, or your light intensity diminishes rapidly. Furthermore, that strain clearly has sativa traits, so its going to flower alot longer than an indica. Heavy sativa can flower an extremely long time. Be patient. Judging trich cloudiness is a good way to judge, cut when its mostly cloudy, or even let them get a little amber if you so desire.