Looking good
I think you'll have one very happy hamster.
Have you got a sieve or tea strainer for the sand? If (s)he decides to pee in it, you'll need to sieve it out or it'll begin to smell.
Have you done the tissue trick. (Putting some tissue with your scent on it in the cage. Something to think about closer to the time). I think cage wise your all set! Any ideas on what you'll be feeding them?