Forget Aluminium tent pegs, get titanium pegs as they are much more durable. If you've got a Leatherman with a bit driver, you can adapt a standard 6 milimetre drill bit to fit into the bit driver. This should be able to drill into the ice just enough to insert a round section titanium peg.

What kind of tent do you have? A good geodesic type would be best. A Lightwave F2 Ultra tent weighs only 2.6Kg. These can some times be used without being pegged down especially if the fly has an additional snow skirt.
What would really be important is the insulation bewteen the ice and yourself. I would go for something like the Exped down inflatable matress (good to -40C) and a good 2Kg down bag or good synthetic such as a Snugpak softie 12 or Snugpak Antarctica for the temperatures you are envisaging.

Lithium Batteries will work down to -40C.

You may also need an axe to cut the ice to make water. You will probable need a good stove such as Primus Himalaya or MSR XGK to melt the ice.

You could use your AMK 2.0 Bivy as a vapour barrier liner if it gets really cold in conjuction with the sleeping bag.