I play druids aswell. I don't know if you use Innserspace/Isboxer or one of the other programs.

If you use IS I would strongly advice you to get the addon callen Vuhdo. Thats how I manage all my healing.

I have a castsequence as yours with the lifebloom, but I have included a reset=3 in it to be sure I don't "run" out of spells in fx. bossfights.
I also have a single button for Healing Touch as it provides alot of healing relatively fast. Got Growth on a separate button aswell.