You don't need any special space requirements with a rooster. Same as if you were to have 5 hens.
A good roo will protect his hens and possibly give up his life when danger arises if one of his hens are in danger.
Yes, you would get EEs, and a quite colorful array of them too! You're guaranteed...
Well, the only drawbacks for a rooster are
It can be loud, depending on the breed. I have 3 EE roosters, and they aren't loud at all, and they don't crow much.
They can be mean, but EEs are very docile, even the roosters.
5 hens is enough for one roo, just as long as you don't have another roo.
Yeah, you've got a sure fire cockerel there!
The hackles are long, the tail is long, and the EE has sickles. Rooster.
EDIT: Also the comb is to large for an eleven week old hen.