Druids should go for set pieces first. Even though the trinket or cloak is probably a larger individual upgrade, the set bonuses can not be ignored. You can find alternative trinkets or cloaks in different content for the time being.
In the case of feral you should be getting everything but the chest and using the BoE chest I believe. Once you have your shoulders, helm, legs and gloves (legs and gloves likely last since you have a chance of getting them from VoA) then you can start looking at spending your Emblems of Frost on other pieces.
"In anything, if you want to go from just a beginner to a pro, you need a montage." /w TankSpot WTB Montage for Raiders.