well you certainly are in tune with your plants by the looks of them and it’s my philosophy that less is better when feeding the plants....they will tell us when they need food
it has also been my experience that a lower Ph in water is better than a high one....I would aim for 5.2 - 5.8 on my water before adding nutes...the easy thing about GH nutes was they had a built in buffer to keep the Ph on the low range like 6.5....
I don’t do the ppm or EC readings , not when I am using the Lucas formula , it is a pretty cool proof regimen
I am looking forward to watching you bring these girls home and have a successful harvest
all the best