Short and Sweet I'm about to hit 90 on my first mage ever and I'm extremely confused on what Spec I should go. I know you need a certain amount of haste in order to be decent at fire and not sure of much else regarding. I just thought it would be easier to ask what path to take so I can start gearing the right way off the bat. Thanks
You don't need haste for Fire, but you will need a huge amount of crit of Fire. This is absolutely not reachable if you are fresh 90. Huge amount means something like 40%. And even the I would say specs are not that far apart from each other. Maybe you will see some different numbers in high end T15 (540+), but no big difference before. I would recommend you to go Frost with max haste. Have a look Kunis Frost mage guide. It is sticky on the mage forum here and provides all the information you really need for Frost.
frost is good, you'll be doing heroic dungeons and lfr raids for the most part. and frost excells at both of those. mostly cause u can kill trash fast and therefore do dungeons faster. anyway. i wouldnt recommend arcane as its shit now and fire is super gear based. so just stay frost.