The Ready State Virtual Mobility Coach is like having a virtual Kelly Starrett in your pocket.
I got a standing workstation due to several hip/lower back issues that were manifesting themselves after 30+ years of an office job. I was able to adapt pretty quickly to standing and have been standing for pretty much my whole work day (9-10 hours). I’ve seen some stuff about switching it up some. Your 80-20 split sounds reasonable.
Would be interested to see what others do.