I think I can help on the locations of some of the staves.
IIRC:
The Rod of smiting can be bought from a merchant in the underdark
The Staff of Rhynn can be bought at the adventure's mart
The Staff of thunder and lightning is on the druid leader
The Staf of the magi is part of the wizard quest and can be made by your apprentices (great item
)
There are quite a few other staffs of which I know the location, but I don't remember which one is found where. Just play the game and you'll come across most
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The last arrow of Legolas kindled in the air as it flew,
and plunged burning into the heart of a great wolf-chieftain.
All the others fled. -J.R.R. Tolkien, The Lord of the Rings