Wether it is possible to collect 240 iron bars in Stronghold 1 within 8 game years? That's the request of the PYOK mission on very hard. After many attempts I found the determined procedure to reach the goal in Sept. 1077, 5 months before the end of the timer (score 15520).
You need everything else, too, that the mission requires, namely the xbows (had 20) to make the bandits run away. Full ale coverage helps balancing mad cow events.