In reply to andyd1970:
The mammut magic is pretty perfect for your requirements. I have a pair of monoliths which are my go to boots over the nepals when mountaineering. I have used them in winter in scotland and found them great. You will be spending alot of time in crampons and so need to try keep weight down here as 1kg on the foot is equivalent to 5kg on your back so i am told.
Just make sure the boots you choose to take are sized correctly so dont cause blisters or hurt your toes when kicking steps.