You should stick to the FF feed chart as close as possible, it is written on the factor of adding cal-mag to your grow and other need supplements,
Just because you add tiger bloom and cal mag with nitrogen does replace the grow big, it adds NPK all around at the most needed times the grow big has more then just nitrogen.
Later in flowering you will need to start removing the amount you give your plant, this is a example of how my last grow went.
Starting at Week 5 if flowering I stopped potassium silicate (this was my mid flower week and can very on strain and from grow to grow).
Week 7 I removed calmag and dropped Grow big to 2.5ml, big bloom to 10ml, tiger to 5ml.
Week 8 1 tsp of backstrap molasses per gallon of water and nothing but Ph'ed water for the next 4 waterings. This is based on a ten week flowering schedule and the biggest indicator of the plants needs and over doing it is the plant health, color and development.
One of the biggest things to remember Deadhead stay the course and follow the feeding schedule.
Keep up the good work.