Feel free to bombard. :]
There's a very slim chance it will be ok, roosters mate a lot, just one rooster needs at least 8 hens and if he's as "mean "(maybe hormonal overbreeding?) as you've been told, he's need a lot more hens than that. Double that number for two roosters and even then it might not stop the fighting.
A good rooster will ask permission to mate by doing a little dance around the hen and will go by the hen decisions. A bad one will just jump her and hold her down to force her.
A good rooster will show his ladies all the best spots to lay eggs, show the best food, defend them and escort them after they lay an egg.
A bad one's only concerns are 'food for me' and mating.
I think you could possibly keep a rooster if he's a perfect gentlemen, many people keep breeding trios, (IMO, still not enough hens), but these don't sound like they know how to treat a hen.