Increase Billing Name & Address Font Size

We have just migrated to Business Pro after using AccountRight for many years and whilst I understand there are limitations with Business Pro, I find the sales invoice customisation very limiting and have a huge concern with the billing name and address format.

Is there a way to increase the size of the font as we have to post many of our sales invoices to customers but the name and address font is very small that I worry Australia Post will have difficulty reading along  with our clients too, as most are elderly.

Also, the customer name appears in italics which is definitely not desirable as it makes it even harder to read. 

I've attached copy of a partial sales invoice. Thanks in advance.