Ok, I was pretty caught up with the work and it took me more time to complete it but I think I did this right...

So

1) check

2) check

3) used the aforementioned technique

4) check

5) Only found tetrahydrous borax; seem to work anyway

6) check

7) check

8) check

9) didn' use any

The "sandwich" seem to hold. I'll work on it some more, then we'll see.