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It's been around for a while so you should be OK - they announced 'High Sierra' not so long ago -not sure when it's due.
I'm always one for starting from fresh installs rather than backups. Helps refine what I actually need. All my project files and documents are in Google Drive anyway so it's just some apps and I prefer to install them as I need them where possible as I'm forever trialling new bits of software that I quickly forget about (Sketch comes to mind) and never uninstall. If I were to backup it'd take forever and mostly be a waste of time.
Places in California. Sierra being the latest.
Sounds like you're having a really shit time! Hope it's all running smoothly soon.