Ok, so I finally bought one unit, at that price it seemed a good deal, in fact the stock flew in no time. After searching I've found this link that seems to include everything necessary to root the phone with OS ver 1006 (the author has included download links), but the procedure seems to be a bit complicated and it will wipe all data :
The procedure seems legit and other users confirm it's working in the comments, but for now I'll stay with the phone as it is, unwanted system software can be disabled using adb hide, so I have been able to put everything more or less to my liking.
However, I've noticed a few things that I don't know if can be fixed/improved :
-The fingerprint sensor doesn't work when the screen is off, so you have to double tap the screen or press the power button, ¿is there a way to fix this?.
-The phone heats in a very noticeable way when charging with the included adapter, for now since I don't need fast charge most of the time (I charge the phone at night), I have switched to a standard 5v charger, charging time increases by 2x but it stays cool.
-Screen on time from my testing is acceptable (between 4 and 5 hours), but not great, I'll do some more tests but I have the phone running right now with minimal software installed.
Overall I think that this is a good phone, however it must be taken into account that it is unlikely that there will be any more updates for it.