Thank you all again for all of the advice!
I pulled the trigger on the Mont-bell 800 Fill UL Down Hugger #2 Rated at 25 Degrees. Weighs in at an honest 1lb. 12oz. (according to all of my research). I even got it at 20% off.
I know there are lighter bags, and I was looking at the WM Summerlite and the Marmot Hydrogen... But, I AM a cold sleeper and figured I could manage the extra weight for a good nights rest. Besides, I hear those Marmot bags are usually 2 or so ounces heavier than their claimed weight. That Summerlite looks awesome, but It's bucks-y... and like I said, I am a cold sleeper....
Anyhow, this justifies purchasing a second lower elevation 'true' summer bag or quilt next summer for the warm nights i see on my other trips. At least that is what my evil little shopper tells me ;)
Again, thank you for all of the insight! Truly appreciated!