I see all and will answer your mundane questions:
Edit to add: Nolan Coppenthingie? Really? I am sceptical.
Diogenes said:It all sounds much too elaborate..
Why the rented house?
They were shooting a porno flic the next day
Why film the setup and then wait overnight to test?
[They were using the egg albumin process and it takes a while to dry
Are cards the only thing Mr. Lanford can see through steel plates?
Naked chicks too
Why steel plates?
Homage to Superman's x-ray vision. These people are nothing if not romantics
Why the second deck?
Homage to the following porno flic
The list goes on and on and on and on.........
And I am here to illucidate.... you are welcome.
Edit to add: Nolan Coppenthingie? Really? I am sceptical.