Why are you using Purified Lunar Dust and a PvP cloak? Surely you can find another trinket than that.. Reign, Eye of the Broodmother, Illustration and so on. All viable trinkets, rather easy to farm, might be difficult to reach but shouldn't be too terrible.
As for your cloak, the emblem cloak is much more to be preferred over that PvP cloak. Trade 60 haste and 9 spell power for 52 crit, 60 spi (~20 spell power), 23 int (~3 spell power) and a socket, just by getting Volde's Cloak of the Night Sky.