I have read through a dozen great threads on soil now, and it's time to start mixing up my new batch- but to say the least, it gets overwhelming. Can folks recommend some ingredients for me to make a complete soil? I got some Azomite, EWC, and a bag pf pro mix that I should at least use up before buying too much more. I want to add some lave rocks as well, and compost. What am I missing? I have also some Peruvian Seabird guano. I'll be using 7 gallon pots with four plants per. I grow a Grape Krush that is really sensitive to overfertilizing, but my other strains will suck nutes like greedy little piglets. Thank you!