Ye cool man, Wizard is loads of fun up to Inferno atm imo Enjoy it!
Just on a side note...
% of dmg as life in D3 is very very bad. It suffers from heavy reductions.
30% in nightmare
60% in hell
80% in inferno
That is also why life on hit on items is far better.
Ie, say you get an endgame item with +850 life on it vs an item with 3% lifesteal (3% is the highest it goes).
Using Frenzy, life on hit you get 80% of that (each spell have different mods), so that's what? 680? life you get per hit
But on the other hand, since the 3% lifesteal suffers 80% reduction in inferno, you will have to do something like a 113k hits to get the same about of life back and those kind of hits is not going to happen