I would like to add two extra states to the order flow. So, when a user places the order it goes to the new state 'out on prove'. Then you can change it to 'approved to print' by a button click next to where the edit, on hold, reorder buttons currently are; then normal flow can resume.
Only payment option available is paypal, and currently it automatically sets it to complete, since the shipping and invoice is being generated already I believe.