You might want something bigger then a tiny light but as long as you keep the light schedule the same that it is outside (look up sun rise/set for your area) there shouldn't be too much stress on them.
Dont you hate trolls...all up under them bridges. Sometimes you have to tear someone down though, with double posting or when they ask questions that have stickied answers.
my smoke alarm in the ceiling has a plastic ring that it attaches to, i hollowed the drywall out so i could screw on and off the the smoke alarm....the perfect spot