Yes, all of the parts that I recommended are compatible with each other and what you are wanting to do. As far as the "monitor" goes, if you like the TV and it works, I see no reason to upgrade it. Unless it's not 1080p, then I might shop around for one. Black Friday is coming up soon. The GPU will take care of Warlords of Draenor on Ultra no problem. It also has an HDMI plug on it that will send both video and audio to your TV if that is how you want to take care of the sound. And I understand the uncertainty that's present. It was there for all of us at one point.
Also, you are very welcome.