In reply to Tricadam:
The Ortler area is great! The North face of Ortler itself is one of the best ice routes in the Eastern Alps (even though you may be too late in the season for that), Hintergrat is a great alternative, so would be the Grosse Suldengrat on Koenigsspitze / Gran Zebru (but I have not done that one).
Further south the traverse of the ridge around the Forno valley head gives you something like 15 summits, and continuous climbing above 3000m for 20km.
The Rother selection guide book to the Eastern Alps has quite a few routes for the Ortler and neighbouring areas that may fall in the difficulty range you are looking for, but I don't know whether there is an English version.
CB