System Review: 3-phase ESS with MultiPlus-II and existing AC-coupled PV

Hi everyone,

I would appreciate it if you could review my system diagram for a 3-phase ESS setup. My main goal is increasing self-consumption.

I plan on using 3 MultiPlus-II 48/3000/35-32.

I am looking for feedback on the overall design, wire sizing, and grounding logic.
Does this look solid, or are there any improvements you would suggest?

I am new to this, so every feedback is welcome.
Many thanks and kind regards.