27 000 Does it in Trogdor, but I bet that's not the minimum. I'm Guessing 25k.
I'm looking for last cheat commando too.
I bet it's in standard play somewhere.
I think you're right on Peasant #6, 1 for inkeeper, 4 for pedestals, and one extra for using the peasant straight on Trogdor during the final battle (that's what I did).