Suggested Temp Rating of Backcountry Late Season Hunting in CO?

[Gotcha_]

Thanks all,

All great ideas to add warmth to the sleep setup. Looking at booties for sleep/glassing time. Also the nalgene has worked for me / also added the hot hands super warmer at the base of bags that honestly kill it.

Grabbed this Eddie Bauer First Ascent -30 bag. 50% off now and seemed to be ok for price.