I did not manage to make a decent rendering here for now, but I'd like to ask you guys;

How do one proportion the light intensity vs light energy ???

The lightsource lights up the scene anyway if light energy is set really low. But when light energy is set too high, it all add up too much I think.

And the small and enclosed (with reflective surfaces) scene of mine doesn't really have all that light-reflection (GI effect) as I would hope for.

White objects places close to lights, have too dark shadows, because the point-lights dont shine perpendicular on the objects.

I know this is all trial and error but I hope there is some wise men out there to give some tips.