I have a new pinarello coming in the mail with fulll dura ace - currently it's equipped with a 6 speed freewheel. I live in the bay area and it's a very hilly place to ride so 12 speeds just isn't going to cut it. I'm going to upgrade to at least 7 speeds and i wonder if anyone has any recommendations for me.

Currently I'm thinking about this from Harris Cyclery

Shimano Hyperglide thread-on freewheel
11 - 13 - 15 - 18 - 21 - 24 - 34 "Megarange" "C" Type

any help is appreciated.

cheeers,
zac