Warmth -
A fleece earband and smartwool socks make a huge difference.
Pillow -
Clothes in the sleeping bag stuff sack do fine for me - plus I have my jacket all warmed up for the morning.
Bag -
I'm not a mummy person, myself. And I've ridden up to the NWT, Yukon and Alaska. I just like the roominess of a square bag.
Pad -
You have to find the right balance of inflation - overinflation makes you feel like you are at a pool party.
Tent -
You are pretty tall. If your tent is rectangular, sleep diagonally.