Great write-up, but in my opinion this is exactly the wrong way around.
That way, you don’t gain anything from your “switch” up front.
Better to switch to Linux and keep the apps you know wherever possible. Office, Teams, Photoshop, Lightroom and many others are available as web apps now. For many others, there are versions ported to Linux or running well in Wine. Finally, Gnome Boxes makes it trivial to integrate a small 50GB Windows VM to run apps where there’s no other option.
Then you can slowly migrate to Linux-specific open source tools, in your own time.