Seriously, just use KDE Plasma. Sure, it's not 'minimal', but on modern hardware it sings. It just works. It's a batteries-included desktop. It's built on a toolkit that people actually like using (Qt) and they don't change it constantly in backwards-incompatible ways just because the mood strikes them. It doesn't treat you like an infant with ADHD. They don't constantly fix things that aren't broken. Plus if you have a problem you have a decent chance of finding the solution via Google, unlike with a lot of the 'long tail' WMs/DEs people have mentioned.