I built this back in November but didn't finish the RGB until 2020.
Overall this has worked out very well, It's been rock solid running stock speeds. Pretty much anything I throw at it runs great and VR with a new Rift S is dramatically better than my old rig.
Moving to an M.2 primary SSD is more worth it than you realize. It's two less cables you have to route (SATA and power).
Case has enough room to work with and some good cable management options. The tinted tempered glass panel does a great job moderating the RGB. I think it helps it look good without being a neon nightmare.
I looked into RGB fans but got steered to these Phantek LED halos. I think they look great and they're a VERY high quality product. Not the cheapest but you're getting something for it.