This is the best advice I think...
Doesn't have to be travancial but begining act 3 bloody runs will level quickly.. I noticed it because I made a elemental druid and since Ill be using the points on level 30 attacks.. I have to use level 1 fissures and go melee for the most part. Works pretty well. I found that I can survive and clear most of 3 by myself. should be the same with a melee sorc