Buy an iksar ceremonial BP IMO: regen is so, so amazingly good on a shaman and regen items tend to keep their value so you can always resell it once you get in the territory to buy a fungi tunic.
I also highly recommend ogre shaman for many reasons that I'm sure you have already heard or know, so I won't bother to explain my reasoning. If you want to solo hard stuff, it's hard to beat the upside of ogre.
I'll sell ya a poison wind censer for cheap if you want it. Really good leveling weapon for a shaman. My only caveat is that you have to make your shaman an ogre
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