Ok, you have to much hit and not enough haste. You have 20% hit from gear, arcane talents give you another 6% hit. This means your rocking out 26% hit. And with only 795 haste is low, really low.
The main issue i see with your current gear is your attempting to gear for both fire and arcane at the same time, and this is hurting both specs. In the end you will have gear that is a trade off between fire and arcane itemization, and thus trade off your dps between fire and arcane itemization.
TLDR: Dump hit get haste.
If you decided to go more arcane then fire try to get your hands on:
Legs of Woven Death or Kilt of Untreated Wounds over your sanc legs
Abyssal Rune over your 264 trinket, or a DFO
[Today 06:48 PM] Ion:swimming in a natural body of water ISN'T acceptable...it's momentarily tolerable