I'm recently starting this line of nutrients as well both Soil and Aqua Flakes using everything but the magic green. So far things look good. As long as you PH balance your base and then add your boosters you should be good. I'm curious if you are using the chart off their website with the nutrient calculator or the schedule from Humboldt Distributors?
One thing I'm not totally certain of yet is how often to feed vs water. I'm accustomed to alternating with nutrients and water every other time using Supernatural and Advanced Nutrients, but supposedly (and the H&G rep also believed this to be true), that you can feed every time so long as you are using the drip clean which then theoretically eliminates the salt buildups in the growing medium, they also claim you will only need to flush for 2-3 days vs the usual 7 days or longer..
keep in touch, like to hear how things go..