Hello fellow farmer welcome to the farm where we are happy to help you succeed!!!Looks good, man! Since you asked about organic feeding in flower, I will address that.
I use Neptune’s Harvest Rose and Flower (1oz/gallon). 4oz for four gallons per plant at this stage.
You can use a fertigation bucket with a bit of hose to get the juice where it needs to go. I shoot it straight into the root ball.