What's the best commercial potting soil?

Budswell for buds and SuperTea for veg

I have some Pro-Mix CC40 with mycorrhizae soil mix and was planning on using some 30 gallon fabric bags filled approx. 75% of the way. Do I need to supplement this soil with anything else and I hear that coco can cause some cal/mag issues. I purchased the ILGM fertilizer pack and plant protection pack. Will this be all I need as far as nutrients for my 5 autoflower white widow plants? These will be growing outside in a greenhouse. I plan on germinating and then transplanting right into the fabric pots to lessen any shock after the initial 2 to 3 sets of leaves transplant from small pots. This is my first go at it. I hope to start the first 5 shortly but am waiting for my nutrients to arrive. Then approx. 4 weeks later starting another 5 plants.