Good article. It describes what I've been doing for years, and telling others to do. Hopefully MS will catch up to the present and make it the default install method for Win9
However, you missed the MOST IMPORTANT first step!
*!!!Do a FULL IMAGE COPY BACKUP before starting this process!!!!*
When making any significant changes to the HD, like partitioning and/or installing a new OS, you NEED to have an image copy to fall back to just in case / when something goes wrong. Because you know, if you don't make the backup, you WILL need it!