I picked up this little device for $39 when they ran that sale a couple weeks ago. I ended up downgrading to Fire OS 5.1.2 and then rooted and flashed on ASOP. Basically have a Nexus-eque device on the cheap and have been enjoying it thus far.
All in all it took me 45 mins to complete the root / install but this was mostly just going slow and reading up on the process. The actual flashing and rooting portion of the job only took 15 mins.
For those interested I have bookmarked a few links that guided me through the process (this was my first Android device. Yes I am late to the party).
Thanks for your account with this device. Makes a possible bardon with a friend this evening go smoother. At least I know I can get AOSP on it. I do appreciate the links as well.