Good temp, but how about the dev fees? And where's the firmware?
If the dev fees are 3%, just the same as new firmware lurking around, then that's too high; better stick with stock.
The awesomeminer or Vnish firmware is taking 2.8% fees its around 12TH/s it's too high. I think it can also be achieved by stock firmware by switching to high performance or energy mode and improving the room temp to avoid throttling, which can give similar results.
You're right about the developer commission being 3%.
I wanted to show you a little joke about pricing on the Bitmain website.
Unfortunately, standard firmware is significantly inferior to such developers, and the chip configuration mode that I demonstrated works just fine.