You’re using photo, so you would be far better off using dark Titan as your lego.
The double lifebloom = absurd amount of omen procs. Pair that with the omen/regrowth conduit, and you’ll see more mana efficiency and extra healing than abundance can offer without the need to blanket rejuv the party. (Some irony in that talent lost on most of you)
Is the part about bloom removing stacks true? If so, Bloom on yourself and the tank with photo will make it a non issue, and the 20% will help with party heals. It’s win win.