Screenshots of what you're doing.

bad choice of textures. the texture set makes it way to bright.

Cortez, why can´t a map be bright? Is it a faux-pas? The lights will be scaled down, but not that much. It´s also more bight because of the HDR and bloom effects, but still, why not a bright map? I think we have tons(/enough) of dark, rusty, and evil looking maps, it´s time for a change!

why dont you combine texture sets?

I do combine some minor textures from other sets but if you mix different texture sets the risk is high to make your map look messed up and disharmonious.