Personally I prefer to gear 5 at a time in tanaan just killing rares. They're usually always up (but really depends on what realm) and nearly always drop baleful gear and for heroics thats all you really need. As for pets I use a corehound, sporebat, and wolf, with priest fort and paladin kings you have nearly every raid buff. After countless hours grinding heroics, I wouldn't recommend that for gold farming, it is very tedious and frankly the gold/hour isn't worth it imo unless you have multiple 5 man sets in separate guilds. Also, you really cant speed clear any dungeon besides skyreach imo. I use isboxer and it has everything you need.