I was a little concerned with the insulation as well. What would you recommend to warm it up? I went on a 1 night trip just north of the smokies a few weeks ago where the temps got down to the twenties or teens, not exactly sure, and I had a pretty chilly night, i was only using a torsopad though, and I was camped on top of a bald at around 4,500ft. I got a little bit of sleep, but wouldn't want to do it again. Oh, and also it was the first year of winter, so the long night didn't help much either. I was thinking that maybe the fleece jacket would help a little bit if I brought it.
I'm not sure if my phone can hold music, probably. But I enjoy listening to music while I fall asleep, and I don't want to kill my phone battery.