Missed all of this.
Great modest beginner’s stack. 
Personally, I would consider adding Enhanced Brain Hemisphere Connectivity to any brain-related stack, as balanced and integrated activity between hemispheres is an oft-overlooked, important aspect of improving overall brain function and will aid in many brain-related goals, specific or general.
One can also add Longevity (ISRIB and RBM3) to any brain-related stack. Please see the threads below for more information, discussion and experiences with that field.
So, something like:
- Longevity (ISRIB and RBM3)
- BDNF
- Superhuman Genius
- Tdcs & NGF
- Enhanced Brain Hemisphere Connectivity
- Sealed off with myelination from Enpp6 Enzyme (and/or Multiple Sclerosis Treatment 2.0) if you like
This would still be a rather modest, beginner’s stack.