Steve,
You should consider the Goblin Myrmadon too for an all Goblin force. I was just doing an inventory on my Blackblood army last night. Among my collection I've got 2 Goblin Myrmadons, a Goblin chariot, 3 Ripper beast lancers, and 5 Ripper beast archers. You still down the road from me? Anyway, sometime later this year when I've got more time I'd be willing to host a Chronopia game at my place. It might be fun to run a Goblin rebellion against the rest of the Blackbloods or a fight against some Firstborn with a mounted knight and chariot.
Later,
Mike L.