I don't mean to be criticizing your choices, but I'll note here that if you're willing to avoid enabling the latest and greatest ZFS features, bringing up a machine that can mount your disks can be as simple as booting from Ubuntu install media, and having internet available so you can run "apt install zfsutils-linux".

(And somebody's probably going to correct my ignorance and point out that beyond some release 'x', the ZFS stuff is already built-in.)