I would be more concerned about using Windows if I were you. Sure, removing everything that's going to connect your computer to any network is critical, but it's even more concerning to use closed-source OS that is known to having the most vulnerabilities:
https://www.beyondtrust.com/blog/entry/microsoft-vulnerabilities-reportInstalling a Live OS like Tails would be preferable.
This. Funny seeing this topic as I just installed Windows 10 and the nightmare is fresh! My Firewall list is already filled with two dozen rules trying to manage what I allow connecting to the internet and what I don't. It's as if it's designed to be a spyware lol.