The Dr. Earth looks good man. Get the Bloom and Grow versions of you wanna go that route.
I love using dry amendments, but I wanna control what microbes go in. So I don't use stuff that has certain added microbes. I just like to add my own microbes when I want.
This stuff is a great topdressing. And I mix it with other stuff depending on what I feel like the plants want.
BuildASoil Craft Blend started with a big workshop full of the best and cleanest soil amendments available. I quickly became spoiled and would use all of the BuildASoil ingredients together and in different combinations that aren't available here online. After discussing re-amending with a buddy...
buildasoil.com
You're main issue's gonna be lack of light. If you want fat buds they need to be fed.