That is gonna clean up nice! I would personally clean it with 1.5 to 2% mix and then apply Wood Restore. (keep windows wet)
Make sure to post after pictures because it's gonna look great!
So, with the Wood Restore, I'm assuming I should mist the windows before applying WR around them and then mist them once again when I finish that side of the cabin? Is this correct? (I've only used WR once before and it was on a fence)
what Zach said and I would add always spray wood homes from the bottom up to the top and fan spray as much as you can. If you spray from the top down the areas that run down the most will streak clean in different shades. Be especially careful around Windows and any areas that cause drip lines, as they will look lighter than the rest if flooded too much. Also we rinse after using wood restore on sides of houses. You don't want it to rain and cause streaks on the Windows after you leave.
Here are the before and after pictures of the log cabin project. We struggled with rural water supply - both volume and pressure. Not enough pressure for the garden hose nozzle to reach upper levels and not enough of either to use the pressure washer to rinse. The pressure washer kept running away from water. Finally got it rinsed though and applied Wood Restore (and of course rinsed off the window glass after applying Wood Restore).
Since most log cabins, at least around here, are in the country, I don't think we'll attempt this again unless we decide to get set up with a large buffer tank.
I also feel like this customer would've better been served by completely stripping the CWF-UV off, neutralizing, and then applying wood restore. This seemed to leave a great deal of the old CWF still on the logs.