I'm in rural seacoastal Maine, about 10 minutes away from the local beaches, CCTV would be too much of a headache to set up, but perhaps some IR game cameras might work...
From the research I've been doing on breeds, I'm leaning more towards Buckeyes and Wynadottes, both have small pea combs, and are very cold hardy, Wynadottes are native to northern North America and Canada, and they are available locally