If you are getting males though, and only have the one female... maybe you could trade her in (or rehome her) for a male, and go with a bachelor group.
Bachelor groups always mean no fry... and can be very fun to watch. Many times, with a group of 3 or more, you'll have the 'sparring' and 'posturing' for dominance. But, these are generally 'non-contact' interactions and no harm is ever done... but just in case, that's why you'd want the group to include at least 3 of each species, so that there's less chance of a single male bullying another.