In reply to kingjam:
Personally? Number 2. If you're a tentative III leader, a few days on long routes moving fast with a guide will increase your confidence and knowledge about "what works" on that kind of terrain, and hopefully transfer through to your leading skills. Other than a ridiculously massive thaw (touch wood) there will be something "in" somewhere, even if you have to do big walks in to find it.
However, if I had the money and fancied a holiday climbing ice in teh sun I'd go for option 3!!