Right, you're pretty much known for being a big fan of spell speed as a black mage. Of course, as a black mage the more spells you cast in a single encounter, the better. It means more damage of course. Likewise, if you cast more spells as a white mage, it also means more healing done in a single encounter.
Now here's the problem: Each encounter only has a certain range of HPS to meet. Any HPS that goes over it will most likely be overhealing and any gear the tank/party gets, the less HPS you need in general. So with progression and gear, spell speed becomes less and less viable and even completely useless at one point. This is simply due to the following:
-You never chain spells as a healer like you do as a black mage
-Pre-casting completely voids the purpose of spell speed - You should be familiar with this as a black mage too (pre-cast thunder pre-pull)
-White Mages have a considerable amount of idle time, whether you like it or not. This also destroys the usefulness of spell speed
-It contributes nothing for the healing vs cost ratio
But there's a problem with gear: A lot of piety equipment comes with either Critical Hit Rate or Spell speed. Only exception being the ironworks robe and ring. So onward to your gear:
Your final stats with this gear are:
Mind 643
Accuracy 411
Critical Hit Rate 375
Determination 317
Spell speed 698
Vitality 505
Piety 339
In your gear your piety is really low. I can't be assed to do the exact maths on this, but I'm guessing you're under 4300 MP. The popular meta is for the White Mage to have 5000 mp or a bit more. You'll have more starting MP then and your natural MP recovery will increase significantly over time. It also reduces the need for ballad as a White Mage. Naturally avoiding ballad as a bard not only increases their own DPS, but also the casters if the MP is spend on requiem.
Secondly I noticed you have a crafted ring in there. The i120 ironworks ring is actually the second best thing a White Mage can get. The crafted ring you have in mind over the i120 ironworks ring would give you: +19 crit, +2 determination, +18 spell speed, +8 vitality, -3 mind and -15 piety.
3 mind equals roughly 6 determination. Average healing-wise, the crafted ring would reduce your average healing for each spell slightly. For the remaining stats, 19 crit, 18 spell speed and 8 vitality, you're sacrificing 15 piety for it. Even if you meld piety over spell speed, you're still losing out on at least 3 piety. If anything, the crit isn't worth the piety difference. It would be a good ring to use for T13 if you need the HP, however. I would recommend getting the scarf and/or bangles over the rings/earrings. Those are more suitable for White Mages as the rings and earrings are more suitable for Scholars.
Lastly, depending whether you want to offdps during available windows in FCOB, you might want to consider putting accuracy on your nirvana or not. This highly depends on you and the scholar if this is possible, however. But it might be something to consider.
Edit: I just noticed someone sneaked in a comment about spell speed being the "OH SHIT" stat. If you're in a situation you realise you're already too late, no amount of spell speed is going to save anyone here.
You might also find this an interesting topic if you're looking for general White Mage 101s: http://forum.square-enix.com/ffxiv/t...ls-at-level-50