So I think I am ready to try this again. A quick recap from my attempt last week, I fell asleep easily enough after some wiggling around, but I bailed at about 2:45 when I started experiencing some cold spots. I am blaming that on the fact that I was using my wife's yoga mat.
Since my last attempt I have purchased a Thermarest Ridgerest Large. Everything else will be the same, although my tarp is pitched slightly better than last week (I really need to find a good youtube video on tarp pitching). The low tonight is supposed to be 30, which is a few degrees colder than last week, however the windchill tonight will not be quite as cold as it was on my last attempt.
I think I am ready and will be heading out in next hour or so.