Good guide. Thanks for mentioning my post.
I'm now recommending that one changes their PW after changing recovery account or whener owner key is used (normally to change pw so no need there).
I also wonder if master key is neccessary for anything but generating new keys. I guess in the odd even you misplace the paper your owner key is on but not the master(keep these on the same paper).
The only case I can realistically see it being handy is if you write out your owner key and screw it up, you can try the master instead of the owner (saved my butt once, so I print now),