There are several builds you can use for a Fighting sorc, I think the best would be to build an Enchantress. Max Warmth, Fire bolt, Fire ball, Enchant and Fire Mastery. Do you want to use a melee or ranged weapon?
Energy shield is matter of taste, I always had it in 1.09, but I don't like it in 1.10 since my sorc builds no longer have a lot of mana.
I think the third cold armour is the best, so put 1 point in each of them to start with. Some people like to have more points in either chilling or cold armour, but start with 1 and see how you fare. The Fire synergies are more important.
An enchantress is a very nice party character - you could play her with my Tesladin

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