Only things I would consider before Kara would be trying to get Spellstrike Hood/Pants, these make a huge difference, and maybe trying a 10/0/51 Frost instead of the 0/5/56. The 10 in arcane will help dramatically in mana efficiency, but I would lose the 5 in fire either way and do 10/0/51 or 0/0/61. Also, Veiled Noble Topaz is a great gem, I would suggest getting some of those as well. Otherwise, your dmg should be fine for starting Kara. The sword from Murmur is very nice, I'm working for s2 dagger for my upgrade. You will gear up a lot in Kara, so crit will come as well.