grow big will get you through veg and tiger bloom will get you through flower. If you see any yellowing in flower, then add a little grow big back into the mix. You don't NEED the big bud, but it's decent stuff. Pretty much just guano and kelp. A TON of "organic based" fertilizers (fox farm, botanicare, biobizz, etc) just have salts, kelp, and wormcastings in there.
you don't need all 3 of their powdered bloom boosters. you can just buy the beastie bloomz. better yet, just buy monopotassium phosphate, because its the exact same thing but without the pretty packaging and excessive markup.