I’m not so sure if taking screenshots of exact settings is the correct mindset. Sometimes you have a different selection of software available and you might for example want to change your email-client or learn a new video editor because some other software works better on linux or is tied into the system better. You also need to adapt a few workflows to be maximally effective. Because some things just work differently on Linux.
I think your approach is quite good. All I want to say is: I’ve seen people get very disappointed with Linux. Especially if they try to recreate their Windows-experience closely. Be prepared to let go of your now perfectly configured software and start fresh with more things than you currently anticipate.
But Linux is awesome. I think the most important thing is to do a backup first. In case something goes wrong and you accidentally wipe your harddrive or you need to go back.