hey sorry just read your replies

Macro-wise shaman is easiest to set up - assist party2 or set your main as the focus then just shoot ahead. Nothing else matters /castsequence lightning bolt and chain lightning. with a paladin and 4 shamans at level 60! with just gear from farming instances (SM , BRD) , 4 mana spring totems, no use of manatide/elemental mastery, using judgement of wisdom, watershield and BoW... my shamans could shoot a sequence of 3Xlightning bolt 1Xchain lightning for 4min20s straight. (IF level 60 dummies). This might change, but wow... I haven't sat my shamans down to drink before in an instance (level 61 already)

It is also easiest to have range characters on your team during instances, as I realised. Melee requires much higher control and positioning and with graphics/game lag would be slightly harder (But not impossible - i intend to have a melee team too) As a pure pver, it may be better to have a 'mixed' setup of physical and magic dps (IE. Hunter thrown in, maybe a mage).

just my 2cs worth

Don't worry about quests, just pick and follow along. i randomly pick and skip gathering quests, but i share all killing quests. Grinding instances from 1-60 is way better in terms of loot, cloth and drops.