I would opt for turkeys or Guinea fowl. Turkeys are good for meat and eggs (seasonal layers), and Guineas are good for meat, eggs and tick control (if free-ranged), not to mention they are all just plain entertaining to have around. Peacocks and pheasants require more space management, ducks require water. If you don't have a decent sized pond and use kiddie pools, be prepared to drain, rinse and refill daily as water fowl create foul water. Also, both peacocks and Guineas can be quite noisy. I raise turkeys and chickens in large yards next to each other, and sometimes raise the chicks and poults together (if hatching at the same time) until the turkey poults get bigger than the chicks. I'm in No. CA and have never had crossover disease issues.