I have been using a New Hampshire rooster over Delaware hens for making sex links. I also use a New Hampshire over Silver Laced Wyandottes. I had a similar situation as you, I wanted some meat birds, so I sell of the hens and process the roosters. My results have been decent. I get a 4 pound...
Nice set-up. It would be super easy to add a light detector circuit to control you opener. I used an Arduino microprocessor and a photo resistor. I love my opener.
This is my coop I built with the help of my nephew. I will be more than happy to answer any questions.
I am currently raising 9 Delaware hens, 5 Silver Laced Wyandotte hens and 3 New Hampshire Red Roosters. I have hatched out one batch of sex link chicks, I sell the hens and raise the roosters...
Here are a few videos of my coop I built this summer. I am housing mostly Delaware hens and New Hampshire roosters. I have hatched one batch of red sex-links.
Enjoy,
Mudd Flapp