Spell choice advice, 3rd level Artic Elf Wizard Universalist

I will be gaining 3rd level in our Iron Isles campaign in a couple more sessions. We're in a cold Iron Isles game in Spring, and I'm trying to decide what spells to take. My elf is a focused crafter (not sure that matters) and has taken the Elf Weapons feat and primarily uses a longbow in battle enchanted with Magic Weapon so far. Wizards are so weak at dps low level. Besides crafting I've focused on all the familiar feats and have a Short Eared Owl as a familiar.

All that to ask, what second level spells would you choose? I'm thinking one defensive spell and one offensive, and False Life is my defensive of choice. I already cast Mage Armor every morning so that consumes one 1st level slot, if I cast false life that increases my HP by 1/3. As the Wizard I've the lowest HP in the party and am concerned about survivability. Blur and Mirror Image are also good spells, but False Life would last as long as my Mage Armor.

What offensive spell would you choose?