Condi Hybrid?
Changes to druid healing made it much, much more dependent on healing power to be effective. So, without focusing on that and consequently reducing DPS, don’t expect a great deal of healing output.
The magic number is … wait for it … “it depends.” In this case, specifically, it depends how good the rest of your team is. The less healing you do, the more they need to be good at avoiding damage, and spike damage.
So we can’t give you “the” number because, hey, we are not your team.
Run full viper but make staff apothecary.
Put sigil of transference/renewal on it.