Fun strategy
I've some questions about kitting out the banes. (By the way, you've written bane lord instead of bane everywhere)
What's your opinion on adding a lychantrope amulet and maybe a fire plate? The fire plate might seem a little redundant with the bane's heavy starting armour but if you have
a lot of fire gems the better def, ap and 100% fire resistance might make a difference.
I think it depends on your luck in finding death and earth gems. If you can afford to field several banes with firebrand and awe shield I guess that would be most effective but if you have trouble affording them it might be worth it to kit them out some more.