Hey @nickelghost,
If you’re upgrading your case, I’d upgrade your storage unless you have a proper NAS you didn’t mention. Hate to lose work. Maybe 3 HDD’s in ZFS raidz1 or if you’re super hip some even number HDDs with in sets of 2 mirrored vdevs all in a giant pool of wonder store. Your motherboard has enough free SATA ports! (maybe 4 HDDs and your 960)
If you’re getting a GPU, maybe push the power supply up to 650W+ (especially with all those sexy hard drives) and leave the 550W for a HTPC or NAS.
I’d throw in another 8GB of RAM for sure. More if you can (ZFS overhead is a bit naughty). If you want to run VMs you’ll be be a little restricted.
The Fractal cases are beautiful. Only problem with the meshify is cleaning the mesh. I have an earlier incarnation and have to wipe it down with microfiber inside and out. Not a big deal and the airflow is wonderful. Max out the fans and get yourself an AIO with push pull. I love intel, but feel like they just need a lot of thermal headroom to operate stable. The AIO will keep the heat out of the inside of your case too so your GPU won’t be in any radiant nonsense.
That monitor is gorgeous! I’d keep it and spend the money on ram. Or, since you’re getting a GPU anyhow, LOAD UP on cheapie monitors. Make the SPACE. Turn 'em, tilt 'em, set a startup task to launch hardware monitor in the upper right screen so you can sip coffee and watch usage jump when you do stuff cuz that’s cool…