For a map of Sicily reduce to 1/3 of the 2nd preview, I used a scale of 1/2,500,000.
It means at this scale, I cannot use the more precise relief data I have (90m/pixel), as then the map is to "grainy", this is suitable only for lower resolution.
And in this scale, the rivers are hard to see.
So here is a sample with rivers,
and another without rivers.
Can you confirm me the scale is OK, and if you prefer it with or without rivers
And here is a low quality preview (warning, 4744x2040 pixels). It gives you an idea of the size of the map. Is the coverage OK? Do you want it to go a bit more to the East/South? Is the scale OK, or do you want it slightly bigger/smaller?
Or I can make it even bigger (7900x3400 pixels, here with low quality to reduce size of preview