Personally, I use the non-free netinst CD. When I get to tasksel I only check "Standard system utilites". After rebooting (into a system without even X) I insta

Personally, I use the non-free netinst CD. When I get to tasksel I only check "Standard system utilites". After rebooting (into a system without even X) I install, wifi and GPU drivers, microcode, "kde-plasma-desktop" and "plasma-nm". This way, I get a very minimal and lean KDE desktop, and after rebooting I install other programs as I see fit.