I think this is the “perfect brain stack” : shorter, simpler, faster results.
Part I: Primer
Acetylcholine (3 times)
Superhuman genius (1-2h)
BDNF (2 times)
Part II: Pump
Alchemical blend
Hydrogen (drinking lots of water)
Nitric oxide
Part III: Work
Brain growth or conceptual or synesthesia or visual processing
So, less fields, notably TDCS which is gone, a shorter and surer path to “Da Pump” etc…
About the pump: you may want to altern Alchemical blend and hydrogen to really dose. They add a different pressure. So a M-state only pump will differ to a hydrogen only pump, if that makes sense.
If you’re already overwhelmed by the M-state you might discover that you can withstand less hydrogen. Same thing for the nitric oxide that comes next, so try to find your zone. I personally go back to the pump phase a second time after a 3-4h to start again with the “work”.
About the Hydrogen, in my opinion it’s better to drink the water and listen on an empty stomach. For those you want optimal results they’ll have to consider that and maybe switch it with the alchemical blend or another step.
Maybe I will add some other observations if I forgot one.
You’re free to try, share your results and even improve it.
Brain regeneration is still a thing
Edit:
The alchemical pump feels to me like a horizontal pressure line in the middle of the brain from front to back.
The Hydrogen one feels like a global pressure flowing around the brain.
The nitric oxide push feels deeper 
I also feel more mindful with this stack even if I have a stronger pump. The previous stack would give me a lower quality pump and leave me a little overstimulated.