This is largely a warning, but i just wanted to get this out there since I saw it was on your list.
Unless you already have the HAF X case, I'm going to give you this slight warning about it.
The case is super nice and there's tons of room inside, but I ran into a huge issue when building that I've read a lot of people have.
Basically the 6 sides of the case aren't completely square in a lot of the builds. This doesn't hurt much of the build, the motherboard seats fine and all of that, but what it did affect is my video card mounting/seating. Because the connection to the motherboard is on one plane, and the rear of the card is supposed to be perpendicular but was slightly off, they wouldn't line up properly. If i wanted to screw the video card into the rear slot area, it would unseat the card from the PCIe connection some. Ever so slightly mind you, but enough that it caused some issues and I kept having to check what the heck was going on. Eventually I settled for the rear of the card being a bit offset/angled inside of the rear slot area. It's not horrible, but it's not perfectly aligned.
I bought mine a year ago with this issue and people had issues with it for months beforehand. It may be sorted out now, but just a word of caution. if you're a perfectionist, this may get under your skin.