LOL at SDL. Good idea on the target though! Thanks. For the rest, I would suggest a large distant (to minimize the radial effects of the light's point source) circular parallel with dege softness of approx 20%, volume visible, infinite light, go into the mat editor and set the quality slider at approx 63%. I would also use a slightly yellow/orange colour for the light. Sunlight off for sure. Place a picture object of a sky outside the window and use a second parallel to illuminate that. Set the picture obj to not cast/no self shadows though in the mat lab! I would also use a couple of low level spherical lights for ambience/fill (about mid mid way up scene) and perhaps wide shallow up aimed conics some radiosity effects (locate just above floor where sun hits. In the light lab try darkening the ambience colour and use shadows between 60 to 70%. This is how I would tackle this.

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