for leveling shocking grasp, iceflow and icy comet all with aoerubies are enough. i took the other electrostuff too but didnt need it at any situation.
i took bloddlust and concentration for hpreg and damageabsorb...
For the most part for a good pve build just follow the stars. Electric pulse/thunderhead and related rubies aren't necessary. You really won't use those.
Try this one. if you have any talents point left feel free to edit it. or if you have rubies left put it in the double attack found in the ice ruby grid.