Like a lot of things on this forum the answer is 'look at dougs gear advice'. You'll spot one mistake straight away: You want a bug out bag but are thinking of a down one. Trail mag in the UK found just 6 months of being stored rolled can reduce a down bags effectiveness by over 50%. Whereas Wiggys for instance are so compaction resistance the Alaska National Guard actually use them in their survival kits vacuum sealed.

It's nice having these forums to kick ideas around in. But stick to the experts advice when it comes to survival.
Simon