To be honest the SH systems are not big enough for the number of sites they have, I own both a 6 site bubbleponics system and a 4 site DWC, I only use 4 sites of the bubbleponics, and 2 sites of the DWC usually. You will see what I mean once the roots really get to growing in there. Sounds like your on a good start though, I have had nothing but good results with SH nutes, easy to measure and get the job done. Just change to fresh water/nute solution every 2 weeks or when the level gets low that way your plants always have plenty of nutes. Even if the water level isnt that low and its been more than two weeks the plants have most likely used up most the nutes in the water so be sure to change it. Keep an eye PH, temps, ppm etc. Should have a good grow on your hands, feel free to hit me up anytime with questions