In reply to kevnet:
Sure, I will be in chamonix from Friday afternoon, have booked the guide (also being an instructor for young guide candidates) for two days. Price 660€ to be shared, on the top your lift and cost of overnight in the hut (compared two rot her guides, really good price as it's for full two days, so if second day we leave at 4 am and take the last cable car down, it's still same price). The exact itinerary is still in discussion because of the weather. Possibly aiguille d'argentiere, triangle de tacul, etc.
As said goals are in improving on going in safety on your own, i.e. the last time the guide was keen to unrope himself and leave my friend and me going on our own with his corrections, etc. really great way of learning. If you have any special wishes what you want to learn or repeat, I am also open to hear about them.
One or two spots are free, as I don't want any big group.