As for healing spec where you choose to put your points is usually preferance. I think you should look into taking points out of natures ward, and at least put it into blessing of the grove. As a more powerful rejuvination will be more beneficial to you. I haven't healed much in pve of late but it  seems you would use natures ward hopefully once at most in a raid while the first person you would heal would be the tank and yourself. And remind you that natures bounty is crit  required. In a raid where you have a 2 second cast of ht and nourish... at the most. you would get off about 6-7 nourishes or ht, in that time .You still have a 14.5 second cd. But you also have natures swiftness to blow, a full ht esp. if your clearcasting procs. Maybe i'm looking through obscured eyes and I haven't really done the math but imo when I was speccing your chances of using that are about 1/2. It's a preferance though and in the end the extra .5 seconds seems like a waste. But when researching in ej they mention your use of regrowth and not the value of .5 seconds on swiftmend but the value of regrowth. I find the 15% spell haste given to be more beneficial in healing than the .5 second less cd. And the extra points into moonglow would increase your mana efficiency, which in the end could very well pay off your rejuvination used and much more.  I'm just giving my opinion in regards to theorycrafting the more information given, the greater the value.

The basis of my spec from ej. I took the points out of natures bounty and into natures  swiftness. And a point out of moonglow and into being hit capped but  not that important in pve.

http://www.wowhead.com/talent#0hbhZMZMfzIbzruouo