Here in Philly a guy burnt his house down with his grow room and two firemen died.The DA wants to charge him with murder.He may have been negligent but he's not a murderer.It's all political.If it had of been christmas lights he wouldn't of been charged.
Be careful.Sheetrock(drywall) wont burn.Make sure it's ventilated.A 12 inch square of sheet metal(or diamond plate) suspended directly above the light a few inches down from the ceiling can prevent a hot spot.Good luck.