If you are somewhat comfortable with the cli you could install proxmox as zfs then create datasets off the pool to do whatever you want. If you wanted a nicer gui to manage zfs you could also install cockpit on the proxmox hypervisor directly along with the zfs plugin to manage the datasets and share them a bit easier. Obviously you could do all of that from the command line too.
Personally I use proxmox now where before I made use of Debian. The only reason I switched was it made vm/lxc management easy. As for truenas it's also basically Debian with a different gui. These days I'm more focused on optimization in my home lab journey. I hope you enjoy the experience however you begin and whatever applications you start with.