Need a custom CMS setup for our site: Magento, prestashop, opencart, zurmo

We resale hughesnet, we only offer about 10 products. basiclly reselling internet service, so there is not alot of products, and a customer only order one item, so there in no shopping cart, just checkout Need a way to take customer data/address, push it to a api to check what plan we can offer customer, save customer data to DB so agent can follow up with order, Allow customer to select a plan collect order information submit to api display errors if needed save respoince to DB READ ATTACHED .DOC before you message me