on hindsight, i find it better to level a dps and a tank/healrr class simultaneously as you are lvl-ing through the main story quest, reason being you could use the quests to lvl ur dps, and use dungeons to lvl the healer/tank, and u wont ever be stuck on a story mission since you have that tank/healer class to give u instant queues.
on the subject of healer and tank, just know that if you are a competent tank, u can pretty much determine the outcome of every dungeon up to stone vigil (with the exception of temple of qarn, cutter's cry) solely on ur own because having a good tank is just that important. cant say the same if u r the healer, as if the tank screws up there isnt much u could do...
Shu'on Vana'diel [Keeper of the Sun F] [Order of the Twin Adder]
CNJ50 THM28 ACN15 - MRD45 GLA45 ARC19 LNC15 PUG15