Im playing rogue assa in cata classic and after read some guide I don't understand some things about stats. 
I know as a rogue assa I have to priories hit rating until the spell hit cap of 17% (1332 if I remember) but i dont understand how to manage other stats like mastery and haste/crit or expertise. 
Did I have to put full mastery ? and reforge all the crit chance, expertise and reforge haste at least ? Or did I have to balance mastery and haste ?
Can someone help me to understand in wich ordre and priority I have to manage stats as Assa Rogue in wow cata classic ?

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A guild formed with an ambition for progression and a love for M+ we decided to make the move from Silvermoon Alliance and form a guild to take our focus to the next level, Cutting Edge in 10.1 being the next step.
We believe in building a guild by recruit players of a similar goal and mentality whether it be for raiding or for push score in Mythic plus. We value loyalty, honesty and a positive attitude towards setbacks. Communication skills are an absolute must.
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