I guess the quick answer is yes, but it is a long trek between succor @35 and indom @52. Indom costs an aetherflow stack, but something to consider is that good healers aren't spamming their AoE heals anyway, and the cast time of indom is also instant.

I wouldn't look at succor as an AoE heal. I would think about it as AoE galvanize, and it's doing a lot more than you think. If you log incoming dmg, you should see some goose eggs there.

Your most powerful AoE heal right now is rouse+whispering dawn. When you put succor and rouse+WD together, it creates some serious dmg mitigation. Instead of filling everyone up quickly like a whm can, only to repeat the process because the dmg is still coming, this tactic with sch buys him/her and fairy time to single target heal everyone back to health since it stops the bars dead in their tracks from depleting further.

An FC mate told me since he knows that I level sch and whm, that in order to heal like a sch, you can't think like a whm.