I would try this battleforged set up at 500:
Cast of Players
Troupe, 5xEmbrace
Shadowseer
Death Jester
Cast of Players
Troupe, 5xCaress
Shadowseer
Death Jester
Gives you 5 points to play with for Haywire or the Enigma Pistol on someone.
I don't think the Solitaire is worth losing Battle Forged for. Besides, he either sweeps the entire opposing army, or dies horribly in one round of rapid fire. Could go either way. Plus these units are really rather good. I think Cegorach's Rose and the Storied Sword are a lot of points in 500.
In any case, I would skip the neuro disruptor on the Seer, because he should always be firing his hallucinogen grenade launcher. That thing is so awesome.