It is a bit much for that grow, the Gaia Green products are all in ones and they contain a lot of the same items you are entering into your medium already.
You can 100% use just the Gaia Green products all purpose and power bloom through the entire cycle of the plant.
I use Gaia Green on a regular and am very happy with the results I get from it.
One thing to note is I do find it sometimes needs a bit more Magnesium and I will supplement it with Epsom salts.
I also add in a LAB serum for adding bacteria into the soil to help break down the raw materials into plant friendly forms.
Gaia is finely ground and will break down quite fast, the other forms are large chucks and have less surface area so they will release a bit slower over longer periods of time. I like it for outdoor plants in earth where it can be used for years to come.
Best Of Luck!
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