As others have said, you should really be careful treating your RAID as a backup. I for one do all of my backing up on Playstation 1 memory cards… I had to buy a couple storage containers to store them all, but I guess that technically counts as off-site
Sounds to me like you want an iPhone… There’s nothing wrong with that as long as you know what you’re getting into which it sounds like you do…
A project like GOS will never have that level of polish and it seems like that’s what you’re looking for…