I use ProMix for my base soil. I add EWC, and a healthy dose of FF Ocean Forest soil (maybe a fifth or less of the PM, for both). The OF has stuff like biochar and and is like a good compost almost. That’s about it. I would use fresh compost if I had it, too.
I use dry nutrients and a lot of microbes to break them down. Another amendment I use is Silica, especially if you’re growing in pots. If you get Silica, buy it no less than 1 pound at a time to save money. Ag places can be cheaper, and pot growing suppliers tend to charge too much.
Another good amendment is trace minerals, like BioAg TM-7, or Build A Soil’s Big 6 (same but no iron). Humic/Fulvic is always good to be in the mix.