Sunshine Advanced # 4

I was wondering when doing the coots mix if I was to start with Sunshine advanced #4 (Sunshine Advanced Mix #4 is formulated with peat moss, coarse perlite, coconut coir, gypsum, limestone, and organic wetting agent. Advanced Mix also contains mycorhizzae for improved nutrient and water uptake.) Which Is already balanced to be in a PH of 5.8 to 6.2 would I still add the same amount of minerals
2 cup basalt 1 cup oyster shell 1 cup gypsum

Gypsum and limestone in the Sunshine already, but probably not an excess of either. How big is the plant. A small plant in a small pot and I’d skip those extras. A bigger plant in it’s final pot and I’d add them, maybe not 100% of the amount, I’d probably try 3/4 dose the first run.