First and foremost, I would like to thank PhantomTaco for all the feedback and advice, I wouldn't have been able to pull this off without all the great advice and feedback mate. Thanks a lot.
It's been over a decade since my last custom PC, ever since I moved to work in Dubai, I embraced off the shelf gaming laptops for the high mobility and ease of use. I took on this project of building a new rig as an opportunity to do something relaxing during the weekends, studying the different components out there, picking the components, reviewing feedback, giving it another try and then assembling the beast once all the components finally made it to this sunny land of camels, magic carpets and massive shopping malls. Getting the components delivered all the way here by itself cost me approximately $700, but it was all worth it in the end...I took a lot of pleasure building this rig.
The theme was: Mid-ATX, silent enough that it would be inaudible once I step away from the desk (3 meters away from my bed) but powerful enough to sustain a steady 60 FPS, 4K resolutions on the latest games. Below the reasoning behind each component:
Case: NZXT H440... there wasn't really any competition at this level, an absolute beauty, great value for money, great build quality, perfect fit for my project.
CPU: All the feedback I saw pointed out that this was the right fit. Solid performance, easy OC, good value for money.
Mobo: where most of the hesitation lied... ended up following PhantomTaco's recommendation and not over-investing in a fancy Mobo when all I needed was 6 fan connectors, Z97 chipset and SLI/CFX capable. Very satisfied with the Gigabyte UD5H. solid mobo, a breeze to work with.
GPU: Initially went for 2x780 TIs, but again with so much feedback recommending the 290X, and with the favorable rating for the PCS+ model, I ended up switching for ATI instead of NVIDIA, there simply wasn't enough to justify the difference in cost ($200+ per card). Disassembled the fan brackets and spray painted the frame white to stick with the overall color theme. Very happy with the looks of these babies.
AIO: needed one that supported 120MM fans and I likes a lot the looks of Corsair's H105, very satisfied with the noise level and performance, OC'ing to 4.5k didn't even raise the temps by more than 4 degrees C.
RAM: Here again, overwhelming feedback that 8GB of DDR3-1600 was MORE THAN ENOUGH for gaming and that more expensive RAMs would make absolutely no difference. went for the Fury White as they looked great and were a good fit with the overall theme of the computer.
HDD:Combination of SSD for OS and Apps and Mechanical for flat files. the EVO 840 was a no-brainer, went with a 2.5 form factor for the mechanical HDD as I originally intended to use the 2 front trays on the H440 (ended up going for back trays in the end to leave more room for fresh air to find the PC+ vents)
PSU: EVGA 1300W, great price, solid specs leaving me with enough wattage for OC and upgrades and also remaining within the 50-60% capacity so the PSU always runs silent.
Fans: NB eLoops B12-PS. Another recommendation from PhantomTaco (was onboard the NFF12 bandwagon at first), absolute STUNNERS and amazing build quality, all 6 of these bad boys run between 680 and 1200 RPM and you CANNOT hear a single thing unless if you're OC'ing the crap out of both the CPU and GPUs and maintain amazing temps (sub-50 degree C). They may be expensive, but they are worth EVERY penny.
Monitor: ASUS PB287Q: no monitor came close in terms of value for money for a 60HZ 4K monitor. Still waiting for this one to be delivered (expected within 4-5 days)
Cables: EVGA individually Braided white cables, essential to stick to the white theme, although I found it hard to orient the cables in such a way that they don't apply too much pressure on the inlets/outlets. They're quite rigid and not so easy to twist or bend...
Overall satisfaction: 8/10.
Under load, the 2 PCS+ in Crossfire are loud...loud enough that the sound would keep my girlfriend up at night. Disabling Crossfire brought the noise levels back to a level that makes the system inaudible 3 feets away from the computer. I suspect that the narrow space between both cards and the bottom of the case doesn't let enough cool air flow in front of the GPU fans, the latter end up spinning at high RPM causing the noise (as soon as I close the game, the sound goes down instantaneously).
I'm considering to go for 2 Kraken G10s and a 120MM RAD and install these on the case front fans (which are in-taking fresh air intot he case). Saw good ratings and feedback for the G10s, there is a version in glossy white which fits with the color scheme but I still can't find a good 120MM AIO that would do the trick. any advice on this point would be greatly appreciated.