Death Star (75159) Starting on the Second Floor

The second floor is the largest, as it makes up the "equator" of the Death Star. It's tough to tell just from the floor structure which scene each quadrant will be representing, although there are a couple clues ...

Based on the various computer consoles in the lower right quadrant (in this picture), I would hazard a guess that the detention cell escape will be featured there.

The lower left quadrant is fairly ambiguous at this point. It could be a storage room based on the two barrels OR it could be something far more high-tech based on the hosed contraption towards the center.

Now this I am thinking is going to be the throne room, based on the hand rails - both the circular one around the edge of the quadrant and the 2 small straight sections near the center of the room.

And this section looks like it will be a hangar bay (possibly for the TIE bomber that we built way back when?). That would make sense given the directional arrows on the floor as well as the elevator platform leading up from the floor below.