Hi All, My husband and I are building our first coop. We have 3 Buff Orpington chicks (freaking adorable) that are 1 week old. We are building a coop thats 4'x4' with an attached run thats 10'L and 4' W. We cannot seem to find information how far down from the ceiling should the roost be? and will they need a ramp to get on the roost? should we put in multiple roosts? kinda lost in this department thanks for your help in advance.