No, I haven't noticed anything strange or too bright with RLO's interior lighting, but I don't use Imaginator either...
By Enhanced FX do you mean Enhanced Lights and FX? I'm pretty sure that as of RLO 4.0.7 the two are incompatible with each other, and RLO for ELnFX isn't supported any more. If you're talking about a different mod then my apologies.