This probably sounds a bit harsh but I would give up Cayless, Robinson, Wagon, I Hindmarsh, Fa'oso and Lowrie to get O'Meley and O'Donnell.
Our forward pack would then include O'Meley, Riddell, Moi Moi, Hindy, O'Donnell, Mateo with young guys like Tsoulous, Cordoba, Paolo, Taia, Oake and...