Open Cart Shop

I need a simple & clean, fast watch shop front using open cart.
Should have checkout via bank transfer with auto PDF invoicing.
Should also have the option to pay by credit card but this will be via offline payments.
I will need the control to add & remove these payment options from the back end.

Some thing like these:
https://www.watchmaster.com/en
https://www.schaapcitroen.nl/en/

but more simplified

Brands will be:
-Rolex
-Audemars Piguet
-Patek Philippe
-Richard Mille
-Other Brands