Shamans are tough going early on. In your shoes, I think I'd go for a weapon upgrade, since you'll be hitting things for a while still. And your level 14 slow should definitely help with your melee.
http://wiki.project1999.com/Brell%27s_Keg_Popper
http://wiki.project1999.com/Runewood_Great_Staff
Those are both decent options for <100pp. And if you keep at it, with the wisps - you'll only need another 9 GLSs for a set of banded, which is what you'll want for sure.
Though it's been a while since my Shamanistic years, so maybe I'm way out. I'm sure someone will correct me, if so.