In reply to kevinroet: we had a look at the swiss route and the austrian route, but the descent via the north north east couloir needs to be done before 7-8 in the morning as the sun will be shining on it early on. Last week a dutch guy I spoke to go caught in an avalanche on that slope.
Also the snow at the top of Les Courtes is only in good condition before 6-6.30 in the morning, as first rays of sun really affects the firmness of the snow. Which then does not leave us a lot of time to climb the ridge, as we need to allow some time for the snow there to freeze a little.
We'll do les courtes in the spring time. Safer option
I'll have a look at the other route you suggested.
thanks