Same guiding principle behind using the TOP SECRET door for a room you can see into. (It also does not seem that heavy to me? idk)
You may want to think about and/or keep an eye on the number of light props you put into the map.
I've been going through that with stoneyridge, putting lamps everywhere I needed light until I realized one day (I think someone pointed it out to me) that there was zillions of light bulbs all over the place and it was getting cluttered.
Ghost lights are kind of a cheat, but they work well on night maps.
In his case I would recommend just changing the lights. Phantom lighting works better for cases where it's really hard to justify a light source but not hard to believe the area would be lit as much as you light it.
Does that make sense?
Do what pipeline did.
Just slap a rope or 2 across the span, add like 4-5 lightbulbs per strand, do a wide spotlight. BAM, done.