EDIT: Thank you for all the suggestions! It turns out I am an idiot, and there was an extender for the CPU cable included with the case. Using that made it easy to reach, so I could take out the modular cable. I also rotated the hard drives and worked on hiding the cables a little more, so now it is much cleaner. Take a look at the new pictures for comparison.
First computer I could build since graduating college, and wanted to make a beast! Very excited to tinker with it and try overclocking, as well as play the latest games. Also, I'm trying water cooling for the first time, which looks great and should boost the performance. I have never owned such an expensive graphics card before, so I can't wait to see what it can do!
The case is HUGE, and I think it looks amazing! However, I ran into a few problems with it: The 8-pin power connector for the CPU was so far away from the PSU, it could not reach with the attached cable. Luckily, SeaSonic included a modular CPU cable that barely was able to make it... it is a tight stretch! I really love the option for cable management in this case, it looks so much cleaner than my old computer. I did not zip-tie the cables behind the back panel, I might try to do that soon... I don't know if it is really necessary though.
Also, I installed the watercooling fans and radiator without too much difficulty, but then realized that with the rounded screws, the dust filter for the top would not slide back in. Since it is just a piece of plastic really, I managed to force it by bending it a bit and shaving a bit off the sides. It won't be easy to take off, but hopefully I won't need to do that very often.
Everything else went pretty well! I took my time with the build and didn't try to rush it. I am very pleased with the final result, and can't wait to see how much performance I can get from this.