I would do 3, but not 1 and 2, unless you would actually rather play a Hermetic mage than a Black Mage.
Summoning 2, Binding 2, Assensing 3 makes me sad. I would rearrange those. My suggestion would actually be Summoning 1, Binding 4, Assensing 1 and get yourself 2 specializations (I suggest Summoning and Spellcasting) with the last 4 points. Binding is harder to do than Summoning and it sounds like the other magician is good at Assensing.
Manabolt, Stunbolt, and Boom is redundancy. I would swap Manabolt out for Stunball. Or Manaball if you really want a way to take down wards directly, I guess. Or a utility spell.
