Does anybody have experience in large terrain texturing in Sketchup? I am modeling a golf course and I would think that Lumion would be perfect tool for presenting this new golf course and the fairways. I have also tested Unity 3D for creating similar animations. In Unity workflow, I can texture the terrain quite nicely in Unity, but in Lumion workflow I should probably do it in Sketchup.
The area that I have modeled is 1500m x 1500m and I have traced the contours and created the terrain with Sandbox Tools. Then I have used Terrain reshaper to make the terrain less complex. Now I would need to texture the terrain. In sketchup it seems to be difficult to texture the such a big terrain nicely. I am thinking about creating single texture for the whole terrain and projecting that texture into surface. Does anybody have any experience in rendering this kind of big terrain textures in external applications? Does it take ages to render? Or do you think any other good ways to create terrain texture in Sketchup?
Golf course layout with contours:

Terrain in Sketchup (file size about 2mB):

WIP in Unity3D:















