Last legs of leveling WHM (Role question)

[Ninster]

I'm currently lvl 46 with WHM and I have SMN/SCH capped (through SMN) but haven't touched SCH much aside from keeping up with job quests. While I was certain for a time I could pick up WHM fairly well on the side, this happened (my post is on that page):

http://forum.square-enix.com/ffxiv/t...tories./page86

On the flipside, I've played as healer on Cutter's Cry as my first run ever and did fairly well (no wipes). I know I'm incredibly prone to herping and derping until I get things down, so should I pursue WHM any more in endgame content or stick with DPS, where at least dungeon progress can still be made if I get roadblocked?

For example, I needed Dzemael Darkhold for the GC quest. I could've queued with WHM to get in quicker, but I opted to run with an FC mate as DPS because I wasn't quite sure what I was getting into.