I'm currently a mid-late th8, doing tesla work atm. I've had lots of spare elixir so have been maxing barracks(both dark and regular). I've got 4 builders and 3 are on teslas and the last one is doing my second dark barracks to level 4. The question I have is, should I use the builder(dark barracks) on wall work when he's finished? Or should I start on my Archer Towers to level 10 and keep on with teslas? Currently I only have about 22 skull walls....

