Hey guys I've just got my mage to level 36 and was wondering how to respec myself for elite runs from what I've read it should look something like this:

Fire 4/5
Ice 4/5
Time 4/5
Shield 2/5

Knowledge 5/5
Agility 5/5
Might 5/5
And my final will probably be Critical Shot 5/5

One question I do have is which upgrade should I get for shield? TIA