Well, you're off to a good start. Here's my critique.
First, Tranquil Spirit, for what it does, is a shameful waste of points. Maybe
at 80, when we see how good Nourish is... but you still won't be spending any significant amount of time casting Healing Touch. It just doesn't play to the Druid's strengths. Instead of that, sub Genesis in your level 70 build.
At 80, then, you'll have room to get Nature's Splendor, as well as pick out any other useful talents from the Restoration tree. Here's where I'd take that.