I am getting more into mountaineering and need some advice on a sleep system.
I usually use a 30 degree down mummy bag with insulated pants and DAS parka with a montbell bivy sack on a full length ridge rest. I just made a Ray Way quilt which is rated around 28degs. It has 2inches of synthetic insulation. But I'm now starting to doubt if it has enough insulation for me. The coldest it usually gets is about 0deg F but above treeline in a bivy that can feel a lot colder. My trips are usually only on night or two. Down is the lightest choice but I really like not having to worry as much about a synthetic bag or quilt. Any suggestions? What does everyone else use for mountaineering? Anyone use a quilt for mountaineering with a bivy?
I was thinking about using a thin synthetic quilt over my 30deg down bag. But that could be a pain inside of a bivy.
Also what are some more tips for heating up my boots in the morning because my feet get super cold.

