Additional dark barracks

Just joined and first post but I started reading the forums when the whole TH11 farming craziness happened.

Anyway, since a new dark troops has been added and the valkyrie looks more interesting, I'm thinking it might be a good idea to increase the number of dark barracks. I'm considering using a majority of my farming troops to be DE troops but it just takes too much time with just 2 dark barracks. Also, it looks likes the bowler and golem are a good combination but the amount of time to make both will not be economical. How much more if valkyries are added to the combo.

In my opinion, it isn't really necessary