Somewhat agree with Journey. But if you fancy an upgrade I'd say the 9700k is on an EOL platform and at your resolution the difference between the AMD and 9700k would be nothing. So if you have ££ burning a hole then I'd go Ryzen 2 route.
That was why I was hesitant to move to a 9700 as the AMD chip is a much newer platform. However the boards are stupidly expensive at the moment and I don't like the idea of having an active fan on the board either.