Sanity check for Proxmox + Plex setup

Hey all,

Just purchased a little Lenovo M720q and an external 8TB HDD to start off.
Wanted to use Proxmox so I can play around with VMs in the future.

Here is my plan:

• Install Proxmox on the PC storage
• Install tailscale on the host so I can have remote access
• Create a VM and use docker-compose for Plex, *arrs, etc.
• Create a VM for my download clients, and putting this entire VM behind a VPN
• Create a VM/LXC, mount the external drive to it so I can set up a NFS/SMB or something (still researching this) so the other VMs/containers will all have access to it

I am not sure with file systems to use for the Proxmox host and external storage. Been seeing people recommend EXT4, NTFS, ZFS