The ASoC/AM is supposed to resemble his deep understanding in regards to the arcane arts in all its facets. He is certainly no blaster cause my forbidden school is evocation.
DC mage to some extend as he'll have a fairly high int and I could go for 3 spellpower high arcana in theory. Not sure it's enough to make him a real DC mage though.
The build is more an RP build than power build.
I am not even sure I want the AM abilities to change the elements or make Aoe harmless to allies. The elemental changing would make sense RPwise.
It's also a pretty incredible change in his personality he used to have troubles learning abating related to magic and at the peak of his power he'll be one of the most adverse with it