Looked really closely at both of those cases and I think that the AZZA Genesis is interesting, so I will talk about that one first. It has a lot of interesting features like a front mounted PSU and bottom to top cooling with 2x140mm fans on the bottom and two 200mm fans on top pulling out, now, about that fan set up; since the MoBo is situated upside down in this case, the CPU will be closest to the bottom fans and the GPU fans will be fighting with the top fans for air since the fans for the GPU will be trying to pull air from the top of the case. That being said, I think that it has a lot of cooling options and you could play around with it until you found a set up that worked best for you. This case has a lot of options for mounting radiators also, I found this article and I snipped this piece out for you, " 480mm WATER COOLING RADIATOR READY Genesis 9000 is as accommodating as it is thoughtful. The array of attentive features includes its capability to house a gigantic 480 mm water cooling radiator, the longest available in the industry. In fact, this expansive case has enough room for up to three radiators — one 480 mm, one 240 mm, plus one 120 mm." (AZZA Genesis 9000-pureoverclock.com
). It looks like you could set up your CLC on the bottom in a push/pull set up with room to spare. Overall, this case is interesting, I am just not sure how good it will be versus the HAF-X, which is a tried and true air cooling monster with no odd placement of the MoBo and what not.
Now for the HAF-X. Since you are going to use a CLC on your CPU and air cool your GPU for now, this may be the case for you. It has a special mount that allows you to place an extra fan inside the case situated to blow air right at the GPU and you can use it for at least two GPU's it looks like. You can also fit a CLC real easy on the top of the case, "In order to install the ECO 240 A.L.C. we needed to uninstall the top exhaust fan which was a simple task. The built-in radiator mounts lined up perfectly so installing our radiator took just a matter of a few minutes. Remember you can install up to a 360mm radiator so your liquid cooling options are readily available. There is also plenty of space on the interior for pump and reservoir as well; the HAF-X is very water cooling-friendly." (CM HAF-X Review - pureoverclock.com
). You get a lot of the same base features as the AZZA, such as front USB 3.0 and what not. It looks like you can really only mount the radiator to the top of this beast, since I did not see in the video or read in the review about taking stuff out of the case to fit more rads, but, out of the box you will be able to fit your CLC no problems.
After looking closely at both cases, I want to say go with the HAF-X. Cooler Master is known for their air cooling cases, the cable management looks great, lots of room for expansion, room for the CLC, normal layout of components, and it looks a bit better than the AZZA case imo. But, in all honesty, I think that either case will be good for you and I have a feeling that no matter which one you go with you will not be disappointing. It may come down to strictly aesthetics. Hope this was helpful. Cheers.