I am a serious player but not too serious. I play about 2 hours a day. I currently have 4 builders and 2500 gems. Since the 1 gem boost, I have found myself with lots of resources, so I was wondering whether I should get the 5th builder. However when the boost goes I think I will struggle to keep 5 builders going.
Also, I still haven't hit masters so I can get some gems from that

