I highly recommend Teaching Tech’s 3D Printer Calibration site. Some of it will not apply to your SV08 and some of it you will have to adjust to work with your printer, but it is a great overall step-by-step process with tools to generate various test models for tuning specific aspects of print quality.
Um, maybe I’m misunderstanding, but you’re storing keys in git repositories which are where…?
And remember, if you haven’t tested your backups then you don’t have backups!