When I first started growing I started with just the basic GH Trio, and then each grow I added something new. That way I was able to tell if the stuff I was adding had any significant advantage over the other stuff. The canna A and B will get you all the way through the grow with nothing else but you Cal Mag. That's probably the way I would go and then start looking at putting in bloom boosters next grow, unless you already have some Bloom boosters and then you can start those a little bit later.