You don't NEED the big bud. You should wait to add any type of bloom booster supplements until your plants are in good health. This goes for ANY supplement. Concentrate on getting good results with your base fert, calmag, and zyme. Then add a booster when you have more confidence and have brought healthy plants to harvest at least once in the system you are running.

It's pointless to put a performance exhaust on your car if it's got no engine.