Hold Bill Only order BEFORE fulfillment

Release R11   - We need to create a Bill Only order, and place a hold that prevents invoicing.

The problem is that Bill only goes straight to fulfilled, and we need to place the hold before fulfillment so that we can change the lines where necessary before invoicing.

Leaving the order unbooked is not an option, as the order must be seen in the legacy systems and they only recognize booked orders.

Is anyone aware of how to expand the list of values available in create Order Hold Types to include the ability to place a hold preventing fulfillment or is custom workflow the only option?