I would take a hard look at thermals. The 6 core i7 8700 is great, I use it in a Hackintosh. But Apple crammed it into a very tiny enclosure - as they always do nowadays.
I suspect it's either going to be very loud all the time or not turbo as much as this CPU is capable of.
Pricing once again is ridiculous, but I guess I would swallow it if performance was okay. But if the build limits the power of the system, this is NOT worth several thousand $.