What Crash said: IL2 GBS is all about single core speed - if you can successfully overclock the hecK out of that I9, then it could maybe win over an AMD. (I have no idea how that motherboard and memory will handle overclocking)
As for GPU: As you're already spending a lot of money, I'd say go for 3080ti. Think of the future, like how long will this pc last for you? (You may need a bigger case as well then ... oops ) 3070 might do for VR, but what if you decide to go to a newer VR set?
Note on the complete system as quoted: RTX 3070ti appear to be specified as needing 750W Power supply - yours is 'only' 650W? (Also think future here, what if you want to add disks, or update GPU? Needs more POWER!
I am not really current on all the latest hardware and performance - and I am just stating my opinion here.
Idea is to have you think a bit more about what you are going to purchase - it's a big purchase, so me thinks you need to think hard about what it's going to be, and for how long it is to last for you, to have fun with - and as a tool to use for your job!
No mention of a monitor, but I assume it's a very nice one