You could put the store order details and summary server behaviors on your checkout success page along with the UE if you would like. The normal flow of the confirm page after the user clicks on the button is to authorize the transaction, then upon success the store order details and summary run and finally the email is sent, then the user is redirected to the checkout success page.
It looks like you were working on this in a ticket with Jason, if you can you should update the ticket since it has your code there already.