Share 'Blown in insulation and than add recessed lights'

Hi everyone,    I'd like some comments. I am just thinking ahead. Lets say, you just blew in attic insulation and a year later the owner calls and says, " I want to add recessed lighting" Here's my question: and keeping in mind sustainability and building science:   Is it best to put a double layer, overlapped, of batt insulation, rather than blown in and have 13 in+ of insulation fall into the h…