I have a warbonnet blackbird dl 1.1 and a 20* leighlo down UQ. I am very tall so the 66 inch long UQ only goes so far down my legs. I need a pad that is warm enough to match the 20* of the UQ (or better) and is still ultralight in weight. Does a pad like this exist? You can include heavier pads that have the option of modification for light weight. Basically what thickness CCF pad is going to get me down to the 20*. I sleep hot.