So, I finished the quilt - went with a double layer of 6.0 climashield. This weekend I'm out with the scout troop and am currently testing how low I can get. I'm in my hammock now and its 18°F and I'm toasty warm in my 0° synth bag. Forecasted to get down to 0°F tonight...we will see. There is a lodge to bail out to if needed. Pics coming soon.
A big thank you to this forum for knowledge shared and to Paul for an excellent product and service!