Hi,
I think you will need more power for this rack. CP1A only gives 1A +/-12V.
With current modules, you will need at least 2A +12V.
https://www.modulargrid.net/e/4ms-company-row-power-45
With a brick power source you have the 4ms for example, but I would consider an internal source or perhaps better an already powered box like the Mantis. You lose the 1U row but you gain power quality.
Regarding the modules
-I would keep the Maths option as modulation source. Your effects modules and complex voices have a lot to modulate.
-I would add a quantizer and an auxiliary mixer for complex modulation shapes, maybe a matrix mixer.
Best regards,