We could sit down on a evening and do this through a shared screen.
Debian, Ubuntu or even Alpine, it's pretty simple to do this.
RAID could be done through software or hardware configuration, in combination with LVM (which makes it hooking extra HDD's in the future easier).
You will also be able to communicate with me later as well, if you're in need for something else, which is fine.
I like teaching people certain things, and more.