more types of invoices for different countries

Hi,
for my client, i prepared special invoices for czech republic. But one think. Different countries have different data requirements at invoice. It would be difficult prepare module to select invoices for different groups of customers class (retail vs. wholesale) and include it in the base nopCommerce ??

Here is screen of new incoices and settings:
http://www.web-zlin.cz/images/invoice-setting.jpg
http://www.web-zlin.cz/images/invoice.pdf

you can make changes in Libraries\Nop.Services\Common\PdfService.cs file change the languages and respective fornts for your needed languages in conditional criteria. you can do it easily. :)

yeah, I did it so. I had in mind something automatic but no problem, i do it manually.