Thank heavens I had supper before working on this!
I have a G6 also and it is a fiend for noise. Spent a lot of time tweaking this in LR and couldn't get to what I wanted (that I tried out in CS3 where I denoised with Noise Ninja and sharpened with LAB mode).
Adjusted WB to SHADE, ramped up Luminance and Color Noise reduction, then went with Kelsey Smiths Garden preset - naturally!
The preset messes with the WB again, but I like the looks!