I have a lighting mod installed which whilst it does makes the interiors far more realistic than the flood light brightness of the original, is actually annoyingly dark, so its hard to see anything, the overhead light spell isnt bright enough to light very far, and the balls of light that stick on walls spell, whilst lighting up the immediate area, I have to constantly keep firing them towards wherever I want to look.

So is there a mod that will cast a light spell that could make a whole room visible please?

Similar to torches I believe, ini tweaks allow for the light spell to light up larger areas. I can't remember which setting it was though.