You guys still going?
Just make sure you're really prepared and know what you're getting into (look at the wind forecast).
Quoting your original gear list:
"2 layers of wool socks, waterproof hiking shoes, gaiters
thermals, fleece pants, water resistant hiking pants
fleece jacket, wind breaker, snow jacket
balaclava, thermal beanie, 2 gloves
micro spikes, hiking poles"
I have a few problems (and overkill NEVER ends up hurting you in an emergency - I avoided an emergency based on overkill)
I'll stick to a couple things... Carry those little hand warmers (a LOT of them - maybe 12) - they aren't perfect but they will work and you can end up SERIOUSLY needing them.
Second 3 layers is not a lot if things go crazy. 40mph winds at 14k with no real escape is a b***h. I go with a base (i.e. under armour), breathable short sleeve, breathable thick long sleeve, primaloft jacket, soft shell, hard shell. Only used it once and it was worth it.
Cycling only March-late October... Mountaineering = awesome cross-training