I would beg to differ there, a 1440p 144hz monitor will do in the meantime until I can get a 4K monitor. I'm not going to downgrade my system because of one extremely replacable part, I'd rather have the pc be overkill for a few months until I get the right monitor than settle for less power...
I don't have the right monitor just yet but I'm looking at 144hz 1440p monitors right now, with a view to upgrade to 4K whenever I can. For size, at least 24".