LvL 80 PvP, Haste, Crit, Hit???Follow

At level 80, which should be used, im guessing (prolly wrong tho)

Stm > Spell dmg > Crit > Haste > Hit ???

I am confused about the last three...also anyone have a good website or post that describes the best gear that a mage can get off questing up to 80 so i wont get mauled by the 80s?

ALSO,
anyone no of a website where you can try on different pieces of gear and see which would be best? maybe like a dressing room type or something.

Thx for any contribution.