Leave the old roots in, they’re full of the exact nutrients the new plants need!
They’re decomposed by harvest time, meanwhile they help with drainage.
Worms definitely are a good addition, make sure they’re the red ones.
All that you’re doing sounds good, I don’t buy any powders and don’t use tea, don’t need it, but if you’re passionate about that stuff it’ll be a benefit, use in moderation.
I stopped using basalt and kelp because if the source is not certified organic they can contain heavy metals and other nasty stuff.
Also doesn’t make logical sense to spend your money on stuff that has to be packaged and transported, producing plastic and using energy, creating pollution, to add it to your soil, while there’s a constant stream of free alternatives in the form of kitchenscraps, grass clippings, nettle, dandelion, tree leaves and seeds of nitrogen fixing plants, all this together contains all the necessary minerals and more.
Seeds are the most efficient way of storing and transporting plant material.
What I did with my last pot is create a little mound in the middle to sow into and a ditch around it for watering, with the scraps on the outer ring.
Don’t overdo it with the coffee, diversity is key, a little bit of many different things is great, it’s how the universe works!
I use beans for nitrogen, I’ve used clover but it’s not as robust as a bean plant.
You can combine both though!
Thank you for growing and feel free to create a grow journal and tag me so that I can follow!