In that case, I'm not sure you'll see enough of an advance, to justify the layout.
As far as I'm aware, most games are still dependant on single core speeds, so you wont get the benefit of extra cores. You'll obviously get a small boost from the newer architecture, and the 8700 does overclock well.
Having a multi-gpu setup, and more cores, might then see an appreciable boost, as those cores more effectively feed the GPUs.
The faster RAM, say 3400mhz, would be a nice upgrade with the newer CPU but have you seen RAM prices. That 32GB in your system, is now probably over double the purchase price. 2018 should see a drop in prices, as Samsung is finally adding production capacity, now they've milked us all for extra profit.
Edited by rvectors - 11/21/17 at 1:41pm