Your roosters with disabilities will never be able to be kept with healthy adult roosters. To put it as nicely as I can......chickens are all about domination......the weaker ones always pay the price..........an adult testosterone jacked-up rooster is going to give the blind rooster bloody hell...
X2 on the separate bachelor pen. Once the younger rooster discovers the older roosters have disabilites, he will make the older rooster's lives a living hell. There is nothing a rooster likes better than an underdog to kick around day after day...