Give the Brave Male Absol the Everstone and give the Female Absol the Destiny Knot. This ensures you that the offspring will have a Brave Nature. Since your Absol knows Play Rough the Offspring will have the move Play Rough and a Brave Nature. Getting the Hidden Ability will be pure luck. As for getting 6 IV's that will be pretty difficult.
However, as of X & Y, if you have one of the parents hold the Destiny
Knot item, then 5 IVs total from either parent will be guaranteed to
As you can see you'll only be guaranteed with 5 IVs, but getting the 6th IV will be by luck.
Tip: If you hatched a Female Absol with Justified and it has better IVs than the Mother, then swap the offspring with the Mother and give the offspring the Destiny Knot instead. Rinse and Repeat.