Just wanted to say thank you for your build log.
I went a very similar route to you, started with an Anet A8 and am now left with a box full of spare bits that looks suspiciously like an Anet A8 (Only thing left is the stepper motors and guides)...
The Duet was a bit of a pain to configure after using Marlin but the first test benches turned out like a dream with your settings.
So thanks again!