use both veg and bloom nutes together in veg and flower. so you have an even balance of nutrients and minerals.
Plants don't want high n in veg and high P in flower. that's just a marketing scheme to get you to spend more money. Plants want the same amount of nutes in veg and flower. except for subtle differences between cultivars. Some use more calcium, some use very little nitrogen, some use a lot of potassium, , some use more copper, some are magnesium hogs etc ...
around 3-3-3 or 5-5-5 through out the whole grow is what you want.
Mimic nature for best results. Veg nutes and bloom nutes don't exist in forests