They like to feel safe & secure from predators, as well as comfortable, so I'm not sure what kind of weather you've got right now. They don't care for rain & they don't like a coop that's sweltering hot.
I have too many roosters as well but I gave a friend 1 for his hens recently, and I have separate sections of coop & predator proof pens, so each Roo has 5 or more hens (even that is too small a ratio, Roos should have 8 to10 hens or more, or the few he does have will get jumped by him so much they'll get beat up & lose feathers...then they'll need to wear hen saddles or Mr. Roo will need time outs to give hens a break).
My extra Roos are in the bachelor pad & get along with eachother as there are no hens to fight over & they were raised together. A few, even though they were raised together, still got feisty so I had to separate them. Roos have it wired in their DNA to be the flock leader & protector, so they can become aggressive, even with other Roos they grew up with. Your scenario, with so many Roos, is not conducive to a long term, harmonious environment.
As far as them not going into the coop at night, you need to figure out why...is it too stifling hot? Mine love their coop but as hot as it is lately, mine are perching in their outdoor gazebos, which are safe, the whole setup is predator proof here, so mine can stay out in their pens for cooler air.
If you can show us some photos, we can give you some helpful advice.
