Thank you.Whether you can house them all will depend on a couple of things. If you house them in a "bachelor pad' that is out of sight of the females then they will be less likely to fight, etc as there are no females to compete for. Housing them WITH the females would be problematic not only from a fighting standpoint but also in that the gender ratio would be out of balance leading to your females being at risk of serious overbreeding.
Do you know what a good balance is? If i were to keep only one male, house him with the ladies 8-1... is that okay or will that cause problems for my girls?