The best for you is just to run it monitored then examine if it does satisfy you or not.
In WoD LFRs, with very small exceptions, Healers are performing from well to decent.
Tested with Druid/Shaman and Disc Priest for Satchel farming so far.
With all but the priest made several 6-7 hours long sessions - from late afternoon to 2-3 a.m.
The only issues was from two Bastion of Shadow navigation stucks, which does present, if the healer have no food/water, and get out of Iskar OOM, then wait for resting. Once its recovered, the raid is very away and it stuck, the same apply to the next boss - Socrethar. But all above is reported to HB Devs, so we could see navigation fix there anytime soon.
Small polish for priest Singular should be to disable fearward, pretty odd to refresh it on cooldown.