WTB: UL Alpine Bivy (with some sort of pole structure for headroom), Western Mountaineering or feathered friends bag 20-35 degree, MSR Whisperlite international or pocketrocket

The title says it all:

Am looking for gear that is suitable for bikepacking so it is imperative that the bivy can pack small as I have limited space when im not running panniers.

Id be also interested in any other multi fuel stoves like the whisperlite international

Thanks!