Manually add shipping after order is placed

[TEFoster]

I am helping a client figure out the best checkout solution for their Magento website. They want to be able to:

1. Store credit card information through tokenization so they can create orders manually later.
2. Add the shipping cost to the order AFTER the customer has finished checking out. Then my client will manually submit the order.
3. Only authorize the customer's credit card one time.
1. His current site shows two separate holds on a customer's credit card currently. He does not want this.
2. He is OK if the customer gets a $0 hold and another hold for the actual final amount.

Is there an extension that does this?

[AndrewM]

Did you find a plugin that offers this functionality?

[greg28818]

I am looking to do this too.  We strap packages together in order to save our customers as much as possible on shipping.  So we want to be able to add the actual shipping charges to the pre-auth and then capture it.  We are able to do this in our accounting software, but not sure how this can be done in our Magento cart.