The emails can be edited via the menu System->Emails in the Business edition. Otherwise, you can edit the files in the folder media/com_hikashop/mail but you will loose your changes when you update so keep that in mind.
Where does that PDF comes from ? HikaShop has no PDF generator. It only has buttons to print the cart/order (which you can save as a PDF in your browser). If that's what you're using to print the cart, it's normal that you don't have other information.
If you want to also have the shipping selection, you can add the code:
$this->setLayout('status');
echo $this->loadTemplate();
in the file "printcart" of the view "checkout" via the menu Display>Views.