Hello TEGv,
The option to reorder the Header part of the invoice is unavailable. You can only change the orders of the Columns. Your suggestion is one way we can improve the product more. I took note of this feedback so it can be added to future updates. You can visit our QuickBooks Blog to stay current on all QuickBooks news and updates.
Feel free to use these links for more information on how you can customize your sales forms and email them to your customers.
Just let me know if you need more help. Take care and have a good one!