Hi Bruno,
Nice review, it's very detailed!
If you accept a suggestion, instead of capturing a lot of screenshots to explain every step of the procedure, record a video and post on youtube, This will reduce the size of the post and maybe attract more people.
Note: Recent code on sourceforge supports "screenrecord" cmd. It can be used to record videos after booting Android-x86 (without audio)
Regards
Pstglia