[Aezeal]

I'd prepare the map for nearly all races say 15-20 so 25* 17 provinces might be a bit too small small.. I'd go for like 500-700 provinces?

If you want to make a real "campaign" map with armies starting in approprite locations then you'd have to make larger (WAY larger) provinces behind the Dark elf coast up north-west and the old world would need to be considerably smaller provinces to keep the distributing of provinces around start places fair (though races liek the wood elves would be shafted anyway unless you make Athel Loren into a lot of tiny provinces.

An option would be (though less aestheticaly pleasing) to some to make a blow up box of the old world --> an equal sized map just for the old world just below the world map.
for game play purposes it would be much better

You'd also need to make the high elves a near water race though or give em a 2nd start province in the old world (they have one tower left right?)

personally I'd say a map just of the old world would be just as nice though an maybe easier to create.