The 5" LCD panel i mentioned is the new one. You should pay attention to the model S070WV20 (7").
Yes it works on Android (7") but i don't have it and don't know which Android image you should download, must be one specific to this LCD or it will not work.
Regarding brightness and outside environment is hard to answer, i doubt any 7" in a price range from $35 to $45 will be suitable with direct sun light hitting the panel, but is just an opinion.
Datasheet? let's forward this to BPI folks, unfortunately i don't have any.