Never used ironite (not even heard of it, your in the USA?) but 7-6-6 doesnt sound bad to me. I'm using Hesi nutrients at the moment, the veg formula has NPK ratio 6-2-4.
You need a higher N for veg..about a 20-20-20, 20-10-10 sort..Thats a basic fert that I've had great luck with....flower. I go 10-25-20 not those exact #'s but those ratios..The other iron stuff I don't know..Luck