Your set up looks great.Simple approach is always the best.For the last ten yrs i have been using sunshine mix#4 or pro mix hp.Nothing added period.First week when plant is very young just give it warm water and 1ml of superthrive per gallon.After second nodes appear plant will be ready for General Hydroponics Flora micro and Flora grow,read instructions for amounts.This stuff is fool proof.I go 5 gallon plastic grow bags with holes at bottom.80-82 F in chamber and you water every 2.5 days.Leave tips start too yellow slightly .Go back too 1ml superthrive per gallon and bang you are back on track .Totally fool proof here.Flowering 12/12 ,go with Plant prod 15-30-15 crystal.Wal mart or places like this sell it,cheap.The stuff again is just blue crystals but wow does it f"ing work.Say you have 10 weeks of flowering ,give them this and 2 weeks of flushing with warm water and you have excellent grass.Old hippee taught me this simple approach.You don't need all this fancy this ,that and whatever.Do this and you will have perfect huge buds and potent yield every time.Try goldbud if you have not grown this yet.I'm growing White Rhino from greenhouse and Gold bud from Jordan of the islands.Both Couchlock stuff also both creeper weed.Peace