Check out post 5. I believe that he is wanting to use FF Big Bloom (and Boomerang) instead of the JJ bloom formula which he is out of. So it would be JJ grow, JJ micro, and FF Big Bloom and Boomerang. However the JJ bloom is 0-5-4 and the Big Bloom is .01-.3-.7--in other words, the JJ is way way stronger than the FF Big Bloom. Like already mentioned, I do not believe that Big Bloom is actually FF's Bloom nutrient--I think it is a bloom enhancer. It just doesn't have enough nutrients in it to be a bloom nutrient.
Also, Sin, you cannot just add up all the N-P-K numbers in the different formulas as each uses different proportions.