well sicne you chose his powers before tha game and not on the army list it doesn't really matter. However i would suggest Avenger (to get a template wepain in there) and Might of the Ancients as this power can be used during your oppoents phase. Also swpa out 1 of your missiles for a Multi-melta and you have some kick as fun. Also try to get hunter killers on the ironclad as tho they are 1 shot weapons you land and fire them both. it means he cna pack a punch on the turn he arrives when he can't charge (which is what he's good at)