20/24 works well for me at 180#. Unless I'm building for a heavy person, what Clydesdales need is no concern of mine.

Wider hoops give a better ride, and can be very lightweight. Stan's Alpha 340s are as wide as Kinlin XC279 from bead to bead, give a wider tire profile, are over 100g lighter, and are tubeless compatible. Unless you are a fatty, how can you beat that?