In the end it wound up being over 130" wide (and 40.5" long).
|Click to enarge|
With this map I can structure campaigns such as the conquests of Alexander the Great, the gyrations of the Warring States period or any other period that fits on the map.
The next step is to add in the cities (and population centers) and province borders (for conquest and control purposes). Then there's sea zones, crossing points, and some graphical changes (I'm not quite happy with the steppe and desert symbols). There's a LOT of work left to do.....