your plant needs a higher n whilst vegging and higher p in flower, you can go organic or chemical, id go organic in soil and also you want trace elements, micronutrients which come with some feed. i use blood, fish and bonemeal with an npk of 6.5.5 and mg root boost npk 7.16.0 and mg bloom boost npk 0.0.30 i use small amounts when the plant needs it, it is good to use molasses unsulphered throughout the plants whole life to benefit the soil and the plant. as a quick guide an npk of 4.2.3 will work in veg then for flowering 4.10.7 npk.