Proxmox installation best practice

Hello,

I want to deploy Proxmox in an enterprise environment using ZFS, and I would like to know the best installation approach:

  1. Installing Proxmox on a dedicated disk (possibly mirrored with ZFS RAID1) and then adding four disks for the VMs using ZFS RAID5 after installation.
  2. Installing and configuring Proxmox directly on a ZFS RAID5 pool using the four disks intended for VMs.

Alternatively, what are the best practices for this setup?

Thank you