Putting sleeping pad inside of the bag?
I had the BA setup with bag and pad and while it is top quality gear I always felt like I was in a straight jacket so I sold them. I picked up a nice NF down bag and an Exped pad. What works for me is to use the bag like a quilt and sleeping on the pad with the bag draped over. I can move around as much as I like and I'm always covered without feeling constricted.