Guess everybody has their own way of doing it. I tried the above mention methods of just hooking in lifebloom/nourish into my wild growth rotations. The end result was my healer would waste so much mana I was actually starting to get low mana issues. With just wild growth+healbot/vuhdo my druids mana barely budges.

Really it's just overkill... You'll get to a point where just wild growth will cover most of the healing when your gear gets better. When I do heroics I tend to pull entire rooms so my healbot is essential because of my playstyle.

Everyone has their own style and there's nothing wrong with that. You have to do what works out best for yourself and your playstyle.