pH still seems a bit high for coco. I’d try to lower it a bit more. To 5.8-6.
EC also seems low. Personally I’d be feeding them an EC of like 3-3.5. Although I will say depending on the nutrients used some salts will raise EC more than others so 2 different nutrient solutions at the same EC won’t necessarily be the same. Maybe try to use a nutrient calculator and find out the PPM levels of each element you’re feeding?