I added another 8 to my run so the total is 16 long by 4 wide. Im going to put what was once a doghouse on the end, but make it bigger. Pic below. I want to order four more chicks; Barred Rock, Columbian Rock, Partridge Rock and a Speckled Sussex. I have two roosters now but plan on getting rid of one. My question is will there be enough room for four more birds?