Nice summary, thanks. Do you think, that there is a chance to get Google Hangouts running with microG? It's required by my current employer unfortunately.
Try it. Once you have TWRP on your phone, you can backup your whole phone (including ROM) to SD card and later revert it back if it doesn't work.
I can't tell without installing and I have strict policy of no google / facebook (actually anything related with social media) apps on my phone. Or try to find OSS alternative
