We moved into a townhome back in 2017 and have done minor improvements here and there. We have a bedroom that is above a garage that gets incredibly cold during the winter(Minnesota) and warm during the summer. We had a new furnace and A/C unit put it in hopes that it would help alleviate some of the issues, but I'm starting to get the feeling that more needs to be done, hence the title. Reason being that this room, which was once just mainly storage, now is occupied by my two kids, 4 and 1. I am a youtube handyman and have had surprisingly more successful projects than not. This will most likely be no different if I can help it. But I feel like youtube has left me unable to decide whether or not to do batts for the ceiling. This was the original plan that I made this past winter, but now that spring is coming and planning and research is in full force, I came across blown in insulation which I've read is better?…