ibook store uploading

I have some read aloud books which were made from an app in the Applestore. The books were done for a client of mine who does not have an Apple IBookstore account because they reside in Europe. They will use an aggregator upload to their account later on bu tbefore I send them the books I want to make sure thatthey pass Apple validation. I have my own ibook store account and was wondering if I can upload each book to my account for now so I would know if the books pass validation later on.

Is there a way to put the books in my account with an option to sell or start selling at a certain date in the future? If thats so then I can always remove the books when I send to the client and they can upload to their account

anyone?

RD