Just based on my limited experience with the KK, I might suggest a couple of things. For low and slow, you would be better off by lighting in one spot only towards one side so the fire spreads across the pile rather than the middle in all directions. Secondly, my first cook used royal oak and I found it to behave almost exactly like your first cook. The coco char probably would have been much more to your liking as far as control and expected results.
I have used the cyber cook once and found that it worked really well. I had the bottom damper completely closed with the guru port open about one-third. I set it for 235 and opened the top vent about a quarter of a turn. After lighting in one spot, it took about 30 minutes to come up to temperature. I was pleasantly surprised that it did not overshoot and really locked in on 235. I noticed the fan was running very low and often not at all so I closed the top vent to about an eighth of a turn open and that brought the fan up to the low teens. I think it is better to make it to work a bit,