Just use big bud for 3 week from weeks 2/4,I have used most of there stuff from bud candy bud blood overdrive,but I use a basic nutrient line now consists of 3,canna a/b coco big bud then pk 13/14,but I have used overdrive instead of pk13/14 with similar yields.
I was a avid advanced fan still am but,I much pref the ease of the canna range,I do sometimes use rhizatonic,but only every so often,and that's if I ever buy clones and they are a tad ill.