I think Ezra will be 14 either he or Hunt goes to a ball playing Lock role. Or Hunt goes to 9 for stint.
Personally i would go Ezra to lock and just let him roam and follow everything. He has ample time to get his defence right for the transition.
If the two old boys keep this going it's going to be impossible to separate them. Also how things unfold at 9 will determine whether Ez even gets back in the team. If Paix is still running on all cylinders and Mozer or Billy are also providing it...
Imagine mam off the bench with hunt going to hooker for 20 mins though.... wow.... that'd break open any defence...... I think mams biggest obstacle is paix and mozer. Would be harsh to leave either of them out..