Evan, I did my house in February, go to Home Depot, and if you buy I think at least 20 or 30 bags of the blow-in, you get the machine free for 24hrs, it's simple, the attachment you get with the machine takes forever I believe the diameter of the attachment is 1 1/2in, the tube from the machine is 3" so just take a 3" holesaw drill the hole in the center of each stud about 2" down from the ceiling. and for patching each hole, I had a scrap piece of Sheetrock laying around, cut a 3" hole in the scrap and made patch holes.
It works best if you have someone feeding the machine, my advice is to leave it outside cause it makes one hell f a mess.
PM me if you have anymore questions or want some help with it.