Well, what do you want out of a coop? Do you want a walk in? A reach in? One that the chickens can go under the coop part? I'd make a coop that about 3 feet tall but put it on posts so chickens can go under, maybe 20inches off the ground.with a door for eggs and cleaning. The chicken tractors or small coop section will help, just adjust to the size you need.:]im also stumped on were to start.