I have used a profile similar, Mogu mob grind, fyi expect atleast 18hrs minimum grinding for 10 shards. I unfortunately didn't save my kill and time spent but did review it farming the mogu gave me different loot. (I believe due to professions Skinner/BS got more greens and motes than my Inscription/Alchemy (xmute))
To be frank, grinding long excessive hours for stuff is a sure fire way to draw attention. There are only two spots to grind (Mogu and tricksters).
I'd suggest Fight Here (plugin), TidyBags (Plugin), and finding yourself a relatively decent spawn rate that matches your ability to mow them down 1 by 1. Grinding is the fastest way to get busted so beware.