help with nutes

I am planning my first grow for this spring and it is going to be an outdoor grow. I don't really have the patience to keep track of a million different fertilizers so I was thinking that i would just use a basic 20-20-20 on the plants during the vegetative stage and switch to a 15-30-15 during flowering. would this be alright? i'm just weary because i keep reading forums where people have a bunch of different nutes that theyre using on their plants.

thanks in advance for any help anyone can offer

If you want the best give it everything she needs.

need to read a little mroe on nutes, your K should he higher in flowering not your P. 20-x3 is fine for veg

thank you jesus of cannabis, im just confused because i keep reading different things. I read somewhere else that P needs to be higher during flowering so thats why i thought the 15-30-15 would be better but ill have to do some more researching on the matter!