hey there DankofScot , well what i say is dont use too many additives rhiz and cannazym are both additives, but you'll probably will be alright. probably you'll want to decrease the rhiz a bit heading into flower just to reduce the N you're adding which it does contain. cannazym is a pure chelation agent, something that breaks down nutrients into molecules small enough to be absorbed by the plant whereas rhiz also contains auxin, the plant growth hormone. I notice you're not planning on using cal mag, i'm quite sure you'll need some though. Another thing the Rhiz does is increase the bacterial life in the soil which then produce enzymes which then chelate the nutrients in the soil. Enzymes skips the bacterial life step so it's just quicker , potentiating nutrients quickly. I would say definitely use enzymes especially in flower, with PK it really frosts the plant over. Hope this helps ! 🚀