Rafi- I do think that you might be on the cold side of the sleeper spectrum ( while I'm probably at the other end). I have the same quilt and just got back from a trip w/ temps down right at freezing (evidenced by my platy bottles)- my pad is the regular Neo- so roughly half the r value of your pad. I slept w/ nothing but my long sleeve (150 merino) top and light merino beanie and was comfortably warm both nights (I had a light down jacket, warm tights, clean socks at the ready if needed)
Having said all that, we still need to correct your situation- a warm hat (balaclava is what I'd suggest) would go along way, a thin ccf pad certainly isn't going to hurt (makes a nice sit/kneeling pad too), a high calorie snack right before bed helps me (cliff bar, snickers, etc)- if it's already cold when going to bed I do situps in bed until I'm warmed up- getting warm before going to sleep helps out a lot- lastly I'd insure that your quilt is giving you adequate coverage around the sides- any gaps will quickly rob you of warmth
Mike

