Oh...looking at the exploded view I think using the light blocks would work great.
First I would make a separate with a white polystyrene sheet between the first and second floor...
Then make a little shelf or easier yet a small piece of velcro to place the light block in the attic.
Run the wire from the block to the underside of the new floor separator lighting up the first level only
To light the whole interior (both floors) no separator is needed and just snap the light bar onto the block in the attic
Might look cool without all the wiring and soldering plus its not permanent and can easily be removed and used somewhere else...like those neat, tall apartment building you have
First I would make a separate with a white polystyrene sheet between the first and second floor...
Then make a little shelf or easier yet a small piece of velcro to place the light block in the attic.
Run the wire from the block to the underside of the new floor separator lighting up the first level only
To light the whole interior (both floors) no separator is needed and just snap the light bar onto the block in the attic
Might look cool without all the wiring and soldering plus its not permanent and can easily be removed and used somewhere else...like those neat, tall apartment building you have