I would probably go with either 4 or 5, tho i think the composition is working best in 4.
like gster said, the one thing that's really letting this down is the saturation of the colors - everything is just too red, too green, etc... i don't think it's a sun and sky setting - so i would definitely take all of your textures so far and just knock them back a bit (or a lot).
great job so far mate - keep at it.
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