Voadam
Legend
I would also suggest dropping evocation.
Under the core rules you get acid arrow, flame arrow, and web as good direct combat spells which can supplement your summoned critters for attacks.
Invisibility and then repeated summoning is a good tactic.
Librum equitis has a prestige class that allows spontaneous casting of your specialty spells for an extra prohibited school, and Tome and Blood's alienist can give a big punch to your summoned critters.
Find one of the lists that has stat blocks for all the summoned critters or do them out yourself, it will help a lot in game.
Under the core rules you get acid arrow, flame arrow, and web as good direct combat spells which can supplement your summoned critters for attacks.
Invisibility and then repeated summoning is a good tactic.
Librum equitis has a prestige class that allows spontaneous casting of your specialty spells for an extra prohibited school, and Tome and Blood's alienist can give a big punch to your summoned critters.
Find one of the lists that has stat blocks for all the summoned critters or do them out yourself, it will help a lot in game.