My husband and I just bought Pawhut deluxe chicken tractor and want to have hens for eggs. It says it can hold 3-4 chickens but there are only 2 roosting boxes. Should we only get 2 hens or can we get 3-4? Second,we have raccoons around, do they kill chickens or just go for the eggs? Third, I was thinking about getting Orpingtons. Is his a good starter type? If no, could someone recommend a good breed to start with. Thanks and I'm sure I will have more questions in June when I get my chickens.