@troglet My advice? If you plan on storing important data on it, make sure you set up a solid backup strategy beforehand. Automate your backups, test a restore, and document the process.
Set up monitoring for your drives and ZFS pools, as well as alerts to notify you before something breaks.
And most importantly, enable periodic ZFS snapshots and create a dataset with a 5 - 10 GB reservation (in case your pool runs out of space). You'll thank yourself later.
@troglet some of the responses to <https://www.reddit.com/r/freebsd/comments/1op7tgg/any_news_or_active_projects_similar_to_truenas/> might be of interest,
Any news or active projects similar to TrueNAS CORE based on FreeBSD? (e.g. zVault, etc.) : r/freebsd