I am planting Blueberry Autoflower outdoors in North Carolina. My seeds are on their way. I ordered 5 Gallon Aerated Grow bags from Amazon and I need help creating a soil mix.

So far I plan on using a mix of Pearlite and Peat Moss.... (plus some high quality garden soil?)

I need help formulating a soil mix that I can find cheaply at Lowes... or Home Depot.

Next I need to know what Fertilizers to buy: Which fertilizer to buy for the Vegetative stage and which to buy for the Flowering stage and if any of those ferilizers can be bought locally.

Also my garden center sells mixes of Worm Castings, bone meal...etc... as soil amendments. Do i want those too?

Thanks in advance.

DV8