In reply to JohnBson:
Personally I'd try and mix it up as much as you can. I found on my first trip some of the stuff we did at quite high altitiude wasn't far off my UK mountain grade whilst other stuff felt harder than it should ( especially when getting acclimatized or when there were complications due to objective danger I wasn't used to - which is certainly quite route specific and might be the easy desent as much as the route up).
I can't suggest routes in that area as I've only ice climbed in winter around there. However I loved the Dolomites for pure rock climbing Breggaglia was good too and Chamonix has a good mixture of stuff.
It should be fairly obvious form a good guide book where you can push the grade and where you need a lot of leeway. Rock routes of a reasonable length with an uncomplicated approach / descent once acclimatised I found I could lead pretty much my UK mountain grade. Some of the unchainments in snowdonia are good training btw......
Post edited at 19:32