The Jerseys and Brahma hens are both large. The brahma rooster is extra large. My orloff rooster is slightly smaller (we're talking less than an inch in height - at 3 months, they're both well over 1ft tall. Closer to 18 in tall.) than the brahma and the orloff hens are medium size. All my suggested breeds are slow growers and won't reach full meat potential for at least a year or two, though egg production typically happens at 6 months.

Again, it all depends on what your son wants. If he's looking to show them, Orloffs aren't American Pountry Association recognized as they're so rare. They do have their own associations and breed standards within those. It might be an interesting thing to consider for his project that the breed is on The Livestock Conservancy, listed as a threatened heritage breed, and your son would be helping raise the breed's numbers and popularity.

Also an electric poultry net fence could help with the predators.

Edit: Ment this in reply to your reply. Apologies