ive never had problems with ffof burning my plants. give them plain water for first week then start your nute regimen at 1/4 strength and i never went above 3/4 strength. all i used was the soil trio nothing else. i needed calmag but didnt have any. sounds like you are off to a good start. just remember with nutes a little goes a long way and no drastic changes. any changes need to be gradually inrtoduced. i could go on and on about how i do things but the way i do it may not be right for you and your setup. you really just need to put your setup through a few grows to get a grasp on how it works and what you can do to improve your setup. you can come to me anytime or there is a live help thread that you can get answers from an autoflower.net staff member. hope this wasnt too much and it helps
@tripaholic88 also im totally jealous of your lights lol those are the ones i want. im running a 400w hps until i get those leds