This is how I am going to layer for similar trips and temps:
your base layer seems the right weight
mid layer day I would use the cap 3 zip because you can control the temperature with the zipper
Hard or soft shell on the outside. If you are going to get in deep snow at near freezing or above freezing temps then go with the hard, or nasty storms go with the hard shell. If clear weather and below freezing is always going to happen use the soft shell it is warmer and breathes best.
At night you should carry the insulation layer for additional warmth.
Thats all I would bring, if you wanted one more layer for safety bring the primaloft jacket most warmth for its weight.
Legs, I would only wear the base and soft shell during the day, snowshoeing is alot of work my legs stay nice and warm with only two layers on.
At night add the mid layer for more warmth, if you start to get cold eat something, and then get in your sleeping bag becuase it is bed time. If your sleeping bag is rated low enough then you should be fine without an extra insulation layer.
Head seems good, as long as your parka has a good hood on it you should be fine.
Hands, you might be able to get away with only one pair of liner gloves, but at 3.1 oz total it doesn't hurt to be on the safe side and bring both.
Your feet seem fine.
The one thing you should consider is VBL, I am going to start using it this winter. I will have VBL gloves (latex surgicals) and socks (MYOG silnylon) during the day and a sleeping bag liner at night. From what research I have done hands and feet seem the most important during the day. I can't really speak that inteligent on it becuase I have never used VBL so I will just leave it at that.