>grounding
You want an anti-static wrist strap, it's not mandatory but a sensible precaution if you're on carpet when building.
The H60 is not good, either air cool with a large noctua, or, if you want a closed loop liquid cooler, find one with a large radiator and some bigger fans. Otherwise you'll just have a noisy pump and a small noisy fan.
>SSD
As the other user said, you have an old model, and I'd still advise going for a pro rather than an evo, just for the improved reliability. I do a lot of I/O intensive things, so its quite important for me to have reliable SSDs, don't know about your use case though.
>HOTAS
Please for the love of God send that back and buy a Thrustmaster Warthog or something better, this is coming from a VR user that spends a lot of time in flight sims and space sims. You will regret cheaping out on that.
Okay, if your use case is gaming two things. Get rid of the Titan, get rid of the i9. Titan should go to a 1080ti, the performance is comparable at a substantially reduced pricepoint (consider the Titan a mid-way workstation card, rather than a gaming card; for gaming the performance difference is minimal, whereas for certain workstation tasks the Titan has a substantial advantage). I haven't been following CPUs lately so I don't know what you should get instead of the i9, but my guess would be a 6 or 8 core i7. There are loads of Ryzen shills out there, personally I don't think it performs as well as they purport, but that's for you to judge by reading benchmarks.
>RAM
I can't see how much RAM you have there, but if you have less than 24GB get more, and it should be reasonable fast. Why so much? Because shit like Star Citizen will happily eat 20GB.
>Vive Pro
Right, so honest opinion as an user who sent his Vive Pro back - get a Vive or a Rift, and wait for a real V2 upgrades. Vive Pro isn't that comfortable, isn't that much better visually, and will be superceded wholesale by a real next gen VR headset.