it's no hard, but it's ofc a long way (respect an old vanity gear), it's not a simple vanity you are going for complete a full epic gear yes some items is only question of "favor quest"
Every "favor quest" will give you Mark of Acclaim (MOA) the money standard of khitai, with a lot of theme you can buy first 2 items (boots and wrist), BUT for helm and chest you need have rare (a most rare money of khitai that you gain doing group instance 6 men and few solo instance), until you drop rare, in HM instance, is possible for you also drop the other 4 items that complete your gear (belt will drop in some instance, gloves in one other etc.).