Well I finally was able to get my Stave of the Seer - which will take 2 auments. A red and an orange.
I added the 2 augments; one prevented me from getting blindness cast on me and the other gave me a plus 54 spellpower to fire spells.
But unfortunately, after augmenting the item's minimum level went up to 20!
1) Are there specific augments that I can use that will not change the level requirement of my staff?
2) How do I know which augments are ok to use with my lvl 8 staff?