Hey man!
I think a stack like Limitless + The Executive or Limitless Executive + Beyond Limitless will work for you.
Limitless for learning goals.
The Executive or Limitless Executive for productivity goals (although Limitless has some productivity in it too but Executive will make you a machine!).
And Beyond Limitless to “boost” your learning capability. This one could be used once or twice a week for that extra oomph.
The thing is that currently only Limitless is in ZP format and the rest will be coming soon this month. If I were you, I would start with Limitless ZP and add the other 2 when their ZP version releases.
Another stack idea is Limitless + The Executive + Quantum Limitless (QL). Since QL will take some time to dig into your subconscious to make a genius out of you, Limitless will help in the meantime. But again, QL (and The Executive) isn’t released in ZP yet so once again I recommend you stick with Limitless ZP until they are.
And whatever stack you choose, all the best and welcome!