Anybody growing in soil definitely should be incorporating beneficial microbes and mycorrhizae into their grows. I do a lot of research on this stuff, have for a very long time now, I love it. My recommendations would be get Mykos and Azos as well as this recent microbe pack I found. It has just about everything Recharge has it in, but more of it. It's called Mikrobs. Mykos WP can be mixed into the Azos and Mikrobs once a week or you just use the Mykos granular at transplant. That's all you would need. Either one of the Mykos + Azos + Mikrobs = $80 and should last quite a while.
DynoMyco is another great mycorrhizae product if you would rather just mix it into the soil at first. If I had to say which is the most valuable, I'm expecting it to be this Mikrobs pack. It has beneficial bacteria, beneficial fungi, endomycorrizae, kelp, humic acid, fulvic acid, amino acid, and blackstrap molasses. 1 tsp/gal once a week, can increase to 1 tbsp/gal. They claim there's over 100 billion microbes in an 8 oz pack. Recharge is also 1 tsp/gal and costs $10 more.