Magnesium, and Sulphur, brethren.. those are biiiiiiiiig terpene and flavour enhancers.
Your mix looks good by the way.. only a couple things I would omit next time you use that list to mix something up.
aloe and coconut, wont let you down either. keep it up
i top dress with epsom salts during bloom to up mg and s and also mix a tbl of them in a gallon of water sprayer and foliar that way....alternatively you could spend extra $$$ and buy botanicare sweet.....but epsom salts are much cheaper...add some sugar/molasses to it if you want and that is the only difference in the botanicare.