As you want to lvl ele / resto i d suggest this build :
http://www.mmo-champion.com/talent/?...00000000000000

I m not sure about the improved mana totems and mana tide but i can be very usefull while lvling to keep your downtime low, you can also take the Healing way talents, depends on what you prefer
the Nature's Blessing gives both your healing and spelldmg a boost so it's a must
Tidal master, Blessing of the eternals give you % crit chance so it's also very nice

For the ele talents i took the Lightning mastery and Storm reach so i could kill mobs faster and safer, so i wouldnt have to waste to much mana on healing.
Elemental Focus + Elemental mastery is very nice to keep your mana high also

There are some different ways in speccing but this looks the best imo

If you have any remarks and other trees feel free to share