Good luck with this. My (loooooong term) plan
was to do Pony wars in 6mm. To have two master
maps, 1) For players & looking like a period map.
2) Umpires map. which would be gridded into
what would become 2' x 2' tiles on table.
There would be a stock of Buttes, cliff faces, gullies etc.
so that although the players (campaign) map would have
lots of passes, canyons etc. I would only need enough to
put on a 4' x 4' table (i.e. four of the 2' x 2' tiles).
The idea was something like,
Players, "We'll leave the fort & head to Apache Wells meet the
wagon with the Colonel's daughter"
Umpire looks at his map which has possible Indian encounters.
As it turns out Apache Wells (square 42) is one, therefore a
game is to be played there. He also notes what terrain features
are at Apache wells, i.e. 2 x cliffs & a butte. Game on!
Well that is the dream.