I see no sensible reason to not use Abyssea areas for everything that has a related mob in there that uses any particular spell tbh.
This is assuming that people have just burned BLU to 99 like I did. And spammed blue magic skill up in wherever. Again Abyssea is easy on any DC mob.
Though I personally just use the DC crabs in Vunkerl [S] because they're pretty harmless, always DC so you can cap anything on them, AND I have a second account RDM PL to sit there curing me, thus saving time curing myself. (and a Liminus earring which probably helps. Who knows?)
In Abyssea learning spells I go BLU/DNC for the free erase healing waltz.
Atmas are Minikin + Mounted Champ + Voracious Violet (purely for the regain. Anything would do here tbh.)
And just find the appropriate mob camp and pull em and wait, spamming Bludgeon tbh.
I'm half way there in a few days. So it's working for me.