I'm not a big fan of that build, to be honest. You're missing on some great talents.
It would be worth it to drop one point of anything to take Moonkin Form. Also, Dreamstate is a must unless you wanna live up to the old Oomkin reputation. (Balance without Dreamstate will make you craptastic, trust me)
Points put in Nature's Focus could be better spent unless you plan on PvP healing much. IMO the point used to take Moonkin will increase your spell DPS more significantly than the 5 points put in Moonfury. Basically that talent increases the BASE damage of your spells so +Spell Damage is unaffected. (This talent sucks, IMO, but if you'd want every last bit of damage possible you could take it. In your case you're not aiming for full damage so you could actually skip it if you have a decent amount of +Spell Damage)
So, toying with your base build a bit I'd rather suggest using
this.
Resto -4 points moved from Nature's Focus to Subtlety. In the next patch this will affect threat for all spells so it'll be worth taking to manage your aggro in instances and raids.
Balance -Removed Moonfury. (Cause it suxx0rz!!1!eleven)
-Put 3/3 Dreamstate.
-Put 1/1 Moonkin. (Dooooomkin)
-Put that last point in Nature's Grasp cause it's just so much more useful than 1/5 Moonfury. Heck, just a single point in NG is, IMO, better than 5/5 Moonfury.
Feel free to toy around with it a bit if you want. You might wanna put that last point in something else than NG but I don't see what. Could max Brambles, but it's meh in comparison. Could take 1/2 Nature's Reach but it's still not as useful. Still, it's your build, not mine so do what you like and feel comfortable playing with. :P
Hope this helped a bit.