I got it all figured out. First off gear use this calculator 1 sp/shadow sp=1, 1 sta =.75 everything else is zero but you want a decent mana pool (usually under hp) and you want enough sta to avoid being stun locked by a rogue till death. This means that first generation shadow wrath gear (this version may not have two generations, Blizzard nerfed it 33% after about the first year of releasing it). is some of the best gear till tier two and in a lot of cases till tier 3.
Couple points, dark pact is awesome gives you pretty much infinite MANA, I use felhunter and you want to keep all his spells at level one. Ruin you have to stand still to cast shadow bolt and that means you're probably going to get killed by a rogue so it really doesn't happen that often plus you geared pure dmg so you don't have any +CRIT to make use of anyway. No imp drain life because that talent applies before spell dmg same with imp coa.
+ Hit always helps with binary spells and helps fear break less(fear is considered a binary spell)
I'm not 60 here but in the original I was always top dmg, top kills, sometimes KBS and most of the time top healing, lol.
http://db.vanillagaming.org/?talent#IE0bVRbkyoZxx0pM