No sense to upgrade with what you have there now.
At summer (or when ever AMD releases Zen2 CPUs) 9900K matching processing power is likely available for fair £200, while hundred more gets 12 cores/24 threads.
Next-consoles likely come with that 8c/16t Zen2, so multiplatter games made for those are going to demand lot from PCs, which need to run all the bloatware/overhead of Wintoys and other stuff.
Instead of spending lots of money to something with bad value for money and holding value even worser, start by making sure you've got that other aspect of gaming immersion at proper level.
And I don't mean some gaming/multimedia speaker sets or gaming trinket headsets.