It’s been over a week since getting my Hackintosh up and running; ever since downgrading to v2.4.14 of the AppleIntelE1000e kext I haven’t had any issues. Everything works and it feels like a real Mac.
Below are some pictures of my build; I installed a Noctua NH-U9B SE2 for as CPU cooler and added a pair of Noctua NF-S12A PWM fans at the bottom. Everything is arranged to blow up from the bottom. The NF-S12As are controlled by PWM and set to ~900 RPM; unfortunately the Z87E-ITX doesn’t appear to support voltage based controls for 3 pin fans attached to the CPU fan header. I set the CPU fan to run at full speed and used the low noise adapter to lower the CPU fans to ~1100 RPM.