Here are the game notes as promised.
I completed normal at level 51, but I might go back and try to pick up a few more levels before I start nightmare.
There is a shot of my attributes at level 51 below. My skills stand as such:
Oak Sage - 10
Arctic Blast - 1
Cyclone Armor - 10
Twister - 3 (This was an accident, it should be 1 and Cyclone Armor should be 12.)
Tornado - 20
Hurricane - 10
When I was climbing as a fire druid, my break down looked something like this:
Oak Sage - 5
Arctic Blast - 1
Cyclone Armor - <5
Firestorm - 10
Molten Boulder - 1
Inferno - Everything Else (You gain more damage to Firestorm from synergies by adding to Inferno than you do from adding to Firestorm. Firestorm + Inferno worked really well together if you can get past the casting delays. If there wasn't such a long delay, I'd have tried it the whole game.)
Here are the attributes. With Sage, my life is over 1300 right now.

And here is my godly, godly gear. Make sure to read the ISO note.
