Make a singleplayer version (I think it should work with your map), and then do a multiplayer version. It should be relatively to make the latter once you've done the former - just make a pared-down events file (since the human players won't need the "nudges" the AI does) and ... um ... stuff.
Sorry, my mind drew a blank. I'm pretty much an exclusive SP player, so I'd like the scenario be playable in that mode. Nothing against MP players, though.