The online terminal does not work on websites. You chose the Simplestore with could be the best option for having a small number of products. It gives you the tools you need to sell online using Paypal or a merchant account through Acceptsafe.
Do you have any other Ecommerce needs? If you need to be able to do store promotions or inventory control, or other more advanced ecommerce functions, the we might need to think about the Storefront.