Thats right. You will need trace as well. In that case I would drop the Flourish & dose dry ferts specific (trace + Boron). Dose EI & reset the tank 1 time every week for a reset. This way your plants will be getting all their needs & any extra will be taken out at the end of the week.
A suggestion to test your tap water for PO4 & nitrates so you might have to tweak your dosing slightly. Also you need to check on your gh & kh as well . A TDS meter comes in handy & can help determine reset time. As the water ages the TDS will climb & give you an indication on reset time. Your Gh will climb slightly if dosing extra Mg & Ca which I would recommend since they are important redox elements an important to fish health as well as plants.