Hi Charles, its freezing up here and its not going anywhere soon!!!! About your loft, i take it from your description it will be about 18ft long, split into 3 Sections, 2 for breeding and one for Young birds you will have plenty of room for 18+ doos. The Aviaries on the ends is a good addition too And a big YES they do take up a lot of your time, especially if you intend racing and winning with them