PURPOSE OF THIS BUILD I built this PC for my wife, who is a Graphic Designer. I wanted a powerful machine that she could use along with her Wacom drawing tablet. I wanted her to have something that she could grow into career wise and that can handle anything she throws at it.
TOOLS SHE CURRENT USES She mainly uses Adobe's Creative Cloud Suite (Illustrator, Photoshop, and InDesign etc..). And, she will soon be assisting me with my 4k video editing projects.
THE CASE My wife choose this. She wanted something small and compact. I initially disagreed, saying that the NZXT S340 case was too small, but, after building in the S340 I actually like it. a lot. I've had to go in it a few times after the initially build (to add the RGB lights and additional GPU) and its pretty easy to work in and organize for such a small case. Wife knows best.
MEMORY & GPU
To be honest 16-32GB's of RAM and 1 good GPU would have suffice'd for this build when it comes to my wife's current tasks which is mostly Typography.
So the Dual graphic cards and 64GB's or Ram was purely for her interest in 3D Modeling and Video editing down the line.
Update (10/2/2018) on GPU - Switched my wife's gtx 1080 to the EVGA GeForce GTX 1070 SC GAMING ACX 3.0 Black Edition so I could run SLI. When I first did the build I was unaware that the GPU's needed to be the same to run SLI (still learning). Will update the pics next time I open up the PC again.