Feminised seeds are not a 100% sure thing. You'll get about 80% female at very best. This means that if you try to ScrOG from seed, at least some of the plants you will painstakingly wind around your screen will be male. Bad, bad, bad. For SoG & ScrOG, you need to establish a known female mother and do cuttings from that to feed your flowering area.
Drip systems are prone to nutrient salts clogging their dripper apertures unless cleaned frequently- at least every 2 days. Use an old toothbrush- or even a new one. A clogged dripper can mean a dead plant. This is the main reason why I use a flood system.