@Callia:
For starters, some of your gem choice (hit/mp5, hit/stam) are just odd - replace these with hit/dmg gems at the earliest opportunity. There are still several gear upgrades available to you from badges/ZA - notably the
[Hood of Hexing]. I'm assuming you selected the otherwise suboptimal
[Legwraps of Sweltering Flame] because you need the regen and spellhit - personally I would have gemmed more extensively with hit/dmg, bought the
[Corrupted Soulcloth Pantaloons] and gotten the
[Boots of Blasting] recipe off the AH, or purchased the new badge shoes
[Boots of Incantations] if this was unavailable.
Make sure you apply a Runic spellthread to your pants and try for a +15 spell damage enchant on your wrists - the mats aren't cheap but you have the best bracers available at your porgression level other than
[Bracers of Nimble Thought] (which are rather hard to get now that few guilds have HoDs to spare).
If you have no shadow priest or shaman than mana will be a real issue. Obviously this can be mitigated to an extent by intelligent pot and gem usage, and using mage armor. However this lack of raid synergy will hamper your efforts for a bear more than slightly suboptimal gear - I'd say it's not possible to beat the timer at your gear level without a decently synergised group. No shadow priest automatically lowers all magical DPS by 5%, no shaman by even more (wrath of air totem, mana spring/mana tide, heroism). What does your typical group look like?
In terms of optimising your play, one of the best things you can do is -- if you know the average length of the boss fight -- plan out your cooldown usage. If a fight is ~4 minutes you will have time to pop combustion, icy veins and your clicky twice. If a fight is ~6 minutes you can use your combustion/IV/clicky twice, with an additional clicky in the middle. None of the first four ZA fights should be longer than 6 minutes (if they are you certainly won't be getting a bear!) Alway make sure you use your final set of cooldowns when the boss is at 20% to take advantage of Molten Fury (which you may not have had in your previous 9/40/11 spec).