ZIL/L2ARC necessity + RAID choice

Hi everyone,

I am fresh to TrueNAS. I have a question about the necessity to have ZIL/SLOG and L2ARC cache in my pool and how to setup my vdevs properly.
I have read the TrueNAS Scale guide and the Cyberjock noob guide. With all this reading, my mind is getting blurry…

Use case:
I got a server that I want to convert to an iSCSI and NFS shares server.

Software:
TrueNAS-SCALE-22.02.2.1

Hardware:
Motherboard: X10DRC-LN4+ SuperMicro
RAM quantity: 4 x 16GB RDIMM
Hard drives...

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