Sup beetches

So I'm about to finish my mono-steel team, so far I've got:

>Lead: Skarmory (Salac Berry)
>Physical Attacker: Mega Scizor
>Special Attacker: Magnezone (Choice Scarf)
>Physical Defense: Heatran (air balloon)
>Special Defense: possibly Aegislash
>Support: possibly Aegislash

I'm not sure whether I want to put Aegislash in Special Defense of Support, and I'm debating whether I want Ferrothorn or Empoleon in the remaining space (Ferrothorn is more established as a threat in the meta, but Empoleon has better typing for the team). Anyone got suggestions?