Please don't do this to yourself : I tried Fedora 25 KDE a few weeks ago and it was the buggiest POS I ever ran on my PC. Just customizing the taskbar gave me a black screen that even a reboot didn't solve.

For the record Fedora Gnome was rock stable on the same machine. The only reason I didn't keep it is that I need what I call a 'pinnable taskbar' (like Windows 7).

If you really want KDE you could try KDE Neon, still a bit buggy for my taste but at least it's usable.

After a few more distros I settled on Mint Cinnamon. Not bad but frankly I miss Windows.