Just got round to reading this - my limited experience of GMing is that players will always either run away or stand and fight, as determined by whatever you didn't want them to do when you were writing the scenario
Sounds fun anyhow
Also, to let you know, we might be doing a forum restructure soon - won't make much difference to you, but the Press forum will be refiled in with the other tabletop & boardgame design subforums, just to make things a bit more compact & make it easier for people browsing the forum to find your stuff.