Dude good job. I just built a new pc and have only been using Linux for the past year and half. Since I have all new hardware, and since there are a few games I want to play I needed to install Windows. I went with 8.1 I personally think it's pretty Damn nice.
I like that Windows is making all their platforms(phone, tablet, etc) the same, and getting them fluent is super important. Ubuntu is doing the exact same thing with Mir. I am enjoying learning the new set up/Windows, and videos like this only make it easier. My biggest complaint so far is when you have a window opened, and drag down to close it. This process needs to be sped up dramatically.
Windows 8.1 is a worthy upgrade from 7 as far as I can tell with only using it for a few days.